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Integrating
Exponentials
Integrating
Exponentials
   e ax dx 
Integrating
Exponentials
           1 ax
   e dx  a e  c
    ax
Integrating
Exponentials
                   1 ax
           e dx  a e  c
              ax




   f  x e f  x dx 
Integrating
Exponentials
                   1 ax
           e dx  a e  c
              ax




   f  x e f  x dx  e f  x   c
Integrating
                  Exponentials
                                         1 ax
                                 e dx  a e  c
                                    ax




                         f  x e f  x dx  e f  x   c


e.g. i   e5 x dx
Integrating
                  Exponentials
                                         1 ax
                                 e dx  a e  c
                                    ax




                         f  x e f  x dx  e f  x   c


e.g. i   e5 x dx
        1
        e5 x  c
        5
Integrating
                  Exponentials
                                         1 ax
                                 e dx  a e  c
                                    ax




                         f  x e f  x dx  e f  x   c


e.g. i   e5 x dx                   OR                  e5 x dx
                                                         1
        1
        e5 x  c                                         5e5 x dx
        5                                                5
Integrating
                  Exponentials
                                         1 ax
                                 e dx  a e  c
                                    ax




                         f  x e f  x dx  e f  x   c


e.g. i   e5 x dx                   OR                  e5 x dx
                                                         1
        1
        e5 x  c                                         5e5 x dx
        5                                                5
                                                         1
                                                         e5 x  c
                                                         5
ii   xe dx
        x2
1
ii   xe dx   2 xe dx
       x2             x2

               2
1
ii   xe dx   2 xe dx
       x2             x2

               2
               1 x2
               e c
               2
1
ii   xe dx   2 xe dx
       x2             x2    iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                 9
               1 x2
               e c
               2
1
ii   xe dx   2 xe dx
       x2             x2    iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                 9
               1 x2                               1 9 x 5
               e c                             e        c
               2                                  9
1
ii   xe dx   2 xe dx
            x2        x2    iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                 9
               1 x2                               1 9 x 5
               e c                             e        c
               2                                  9

iv       e x dx
1
ii   xe dx   2 xe dx
            x2        x2      iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                   9
               1 x2                                 1 9 x 5
               e c                               e        c
               2                                    9
                       x
iv       e x dx   e dx
                       2
1
ii   xe dx   2 xe dx
            x2        x2         iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                      9
               1 x2                                    1 9 x 5
               e c                                  e        c
               2                                       9
                       x
iv       e x dx   e dx
                       2

                           x
                       1
                   2  e 2 dx
                       2
1
ii   xe dx   2 xe dx
            x2        x2         iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                      9
               1 x2                                    1 9 x 5
               e c                                  e        c
               2                                       9
                       x
iv       e x dx   e dx
                       2

                           x
                       1
                   2  e 2 dx
                       2
                       x
                   2e  c
                       2


                   2 ex  c
1
ii   xe dx   2 xe dx
            x2        x2         iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                          9
               1 x2                                        1 9 x 5
               e c                                      e        c
               2                                           9

                                         e        1e x  3dx
                       x
iv       e x dx   e dx
                       2         v           x

                           x
                       1
                   2  e 2 dx
                       2
                       x
                   2e  c
                       2


                   2 ex  c
1
ii   xe dx   2 xe dx
            x2        x2         iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                      9
               1 x2                                    1 9 x 5
               e c                                  e        c
               2                                       9

                                          e  1e  3dx
                       x
iv       e x dx   e dx
                       2         v        x        x



                                          e  2e  3dx
                           x
                       1
                   2  e 2 dx
                                                2x       x

                       2
                       x
                   2e  c
                       2


                   2 ex  c
1
ii   xe dx   2 xe dx
            x2        x2         iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                      9
               1 x2                                    1 9 x 5
               e c                                  e        c
               2                                       9

                                          e  1e  3dx
                       x
iv       e x dx   e dx
                       2         v        x        x



                                          e  2e  3dx
                           x
                       1
                   2  e 2 dx
                                                2x       x

                       2
                                         1 2x
                       x
                                         e  2e x  3 x  c
                   2e  c
                       2
                                         2
                   2 ex  c
1
ii   xe dx   2 xe dx
            x2        x2         iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                      9
               1 x2                                    1 9 x 5
               e c                                  e        c
               2                                       9

                                          e  1e  3dx
                       x
iv       e x dx   e dx
                       2         v        x        x



                                          e  2e  3dx
                           x
                       1
                   2  e 2 dx
                                                2x       x

                       2
                                         1 2x
                       x
                                         e  2e x  3 x  c
                   2e  c
                       2
                                         2
                   2 ex  c            e5 x  e x
                                 vi   2 x dx
                                           e
1
ii   xe dx   2 xe dx
            x2        x2         iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                      9
               1 x2                                    1 9 x 5
               e c                                  e        c
               2                                       9

                                          e  1e  3dx
                       x
iv       e x dx   e dx
                       2         v        x        x



                                          e  2e  3dx
                           x
                       1
                   2  e 2 dx
                                                2x       x

                       2
                                         1 2x
                       x
                                         e  2e x  3 x  c
                   2e  c
                       2
                                         2
                   2 ex  c             e5 x  e x
                                 vi   2 x dx
                                            e
                                         e3 x  e  x dx
1
ii   xe dx   2 xe dx
            x2        x2         iii   e9 x 5 dx  1  9e9 x 5 dx
               2                                      9
               1 x2                                    1 9 x 5
               e c                                  e        c
               2                                       9

                                          e  1e  3dx
                       x
iv       e x dx   e dx
                       2         v        x        x



                                          e  2e  3dx
                           x
                       1
                   2  e 2 dx
                                                2x       x

                       2
                                         1 2x
                       x
                                         e  2e x  3 x  c
                   2e  c
                       2
                                         2
                   2 ex  c             e5 x  e x
                                 vi   2 x dx
                                            e
                                         e3 x  e  x dx
                                          1 3x x
                                          e e c
                                          3
1
vii    x e
             2 x3
                    dx
         0
1
vii    x e
              2 x3
                     dx
         0
          1
     1
      3 x e dx
           2 x3

     30
1
vii    x e
              2 x3
                     dx
         0
          1
     1
      3 x e dx
           2 x3

     30
     e 0
     3
          
     1 x3 1
1
vii    x e
              2 x3
                     dx
         0
          1
     1
      3 x e dx
           2 x3

     30
     e 0
     3
          
     1 x3 1


     e1  e 0 
      1
      3
1
vii    x e
              2 x3
                     dx
         0
          1
     1
      3 x e dx
           2 x3

     30
     e 0
     3
          
     1 x3 1


     e1  e 0 
      1
      3
      1
     e  1
      3
1
vii    x e
              2 x3
                     dx   viii   3x dx
         0
          1
     1
      3 x e dx
           2 x3

     30
     e 0
     3
          
     1 x3 1


     e1  e 0 
      1
      3
      1
     e  1
      3
1
vii    x e
              2 x3
                     dx   viii   3x dx
         0
          1                        3x
     1
      3 x e dx
           2 x3                        c
     30                           log 3

     e 0
     3
          
     1 x3 1


     e1  e 0 
      1
      3
      1
     e  1
      3
1
vii    x e
              2 x3
                     dx             viii   3x dx
         0
          1                                  3x
     1
      3 x e dx
           2 x3                                  c
     30                                     log 3

     e 0
     3
          
     1 x3 1


     e1  e 0 
      1
      3
      1
     e  1             Exercise 13C; 2 to 8 ace etc, 9, 10,
      3                               11, 13, 17


                          Exercise 13D; 2 to 18 evens, 21*

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X2 t02 01 factorising complex expressions (2013)X2 t02 01 factorising complex expressions (2013)
X2 t02 01 factorising complex expressions (2013)
 
11 x1 t16 07 approximations (2013)
11 x1 t16 07 approximations (2013)11 x1 t16 07 approximations (2013)
11 x1 t16 07 approximations (2013)
 
11 x1 t16 06 derivative times function (2013)
11 x1 t16 06 derivative times function (2013)11 x1 t16 06 derivative times function (2013)
11 x1 t16 06 derivative times function (2013)
 
11 x1 t16 05 volumes (2013)
11 x1 t16 05 volumes (2013)11 x1 t16 05 volumes (2013)
11 x1 t16 05 volumes (2013)
 
11 x1 t16 04 areas (2013)
11 x1 t16 04 areas (2013)11 x1 t16 04 areas (2013)
11 x1 t16 04 areas (2013)
 
11 x1 t16 03 indefinite integral (2013)
11 x1 t16 03 indefinite integral (2013)11 x1 t16 03 indefinite integral (2013)
11 x1 t16 03 indefinite integral (2013)
 
11 x1 t16 02 definite integral (2013)
11 x1 t16 02 definite integral (2013)11 x1 t16 02 definite integral (2013)
11 x1 t16 02 definite integral (2013)
 

12X1 T02 02 integrating exponentials

  • 3. Integrating Exponentials 1 ax  e dx  a e  c ax
  • 4. Integrating Exponentials 1 ax  e dx  a e  c ax  f  x e f  x dx 
  • 5. Integrating Exponentials 1 ax  e dx  a e  c ax  f  x e f  x dx  e f  x   c
  • 6. Integrating Exponentials 1 ax  e dx  a e  c ax  f  x e f  x dx  e f  x   c e.g. i   e5 x dx
  • 7. Integrating Exponentials 1 ax  e dx  a e  c ax  f  x e f  x dx  e f  x   c e.g. i   e5 x dx 1  e5 x  c 5
  • 8. Integrating Exponentials 1 ax  e dx  a e  c ax  f  x e f  x dx  e f  x   c e.g. i   e5 x dx OR  e5 x dx 1 1  e5 x  c   5e5 x dx 5 5
  • 9. Integrating Exponentials 1 ax  e dx  a e  c ax  f  x e f  x dx  e f  x   c e.g. i   e5 x dx OR  e5 x dx 1 1  e5 x  c   5e5 x dx 5 5 1  e5 x  c 5
  • 10. ii   xe dx x2
  • 11. 1 ii   xe dx   2 xe dx x2 x2 2
  • 12. 1 ii   xe dx   2 xe dx x2 x2 2 1 x2  e c 2
  • 13. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2  e c 2
  • 14. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9
  • 15. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9 iv   e x dx
  • 16. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9 x iv   e x dx   e dx 2
  • 17. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9 x iv   e x dx   e dx 2 x 1  2  e 2 dx 2
  • 18. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9 x iv   e x dx   e dx 2 x 1  2  e 2 dx 2 x  2e  c 2  2 ex  c
  • 19. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9  e  1e x  3dx x iv   e x dx   e dx 2 v  x x 1  2  e 2 dx 2 x  2e  c 2  2 ex  c
  • 20. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9  e  1e  3dx x iv   e x dx   e dx 2 v  x x   e  2e  3dx x 1  2  e 2 dx 2x x 2 x  2e  c 2  2 ex  c
  • 21. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9  e  1e  3dx x iv   e x dx   e dx 2 v  x x   e  2e  3dx x 1  2  e 2 dx 2x x 2 1 2x x  e  2e x  3 x  c  2e  c 2 2  2 ex  c
  • 22. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9  e  1e  3dx x iv   e x dx   e dx 2 v  x x   e  2e  3dx x 1  2  e 2 dx 2x x 2 1 2x x  e  2e x  3 x  c  2e  c 2 2  2 ex  c e5 x  e x vi   2 x dx e
  • 23. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9  e  1e  3dx x iv   e x dx   e dx 2 v  x x   e  2e  3dx x 1  2  e 2 dx 2x x 2 1 2x x  e  2e x  3 x  c  2e  c 2 2  2 ex  c e5 x  e x vi   2 x dx e   e3 x  e  x dx
  • 24. 1 ii   xe dx   2 xe dx x2 x2 iii   e9 x 5 dx  1  9e9 x 5 dx 2 9 1 x2 1 9 x 5  e c  e c 2 9  e  1e  3dx x iv   e x dx   e dx 2 v  x x   e  2e  3dx x 1  2  e 2 dx 2x x 2 1 2x x  e  2e x  3 x  c  2e  c 2 2  2 ex  c e5 x  e x vi   2 x dx e   e3 x  e  x dx 1 3x x  e e c 3
  • 25. 1 vii  x e 2 x3 dx 0
  • 26. 1 vii  x e 2 x3 dx 0 1 1   3 x e dx 2 x3 30
  • 27. 1 vii  x e 2 x3 dx 0 1 1   3 x e dx 2 x3 30  e 0 3   1 x3 1
  • 28. 1 vii  x e 2 x3 dx 0 1 1   3 x e dx 2 x3 30  e 0 3   1 x3 1  e1  e 0  1 3
  • 29. 1 vii  x e 2 x3 dx 0 1 1   3 x e dx 2 x3 30  e 0 3   1 x3 1  e1  e 0  1 3 1  e  1 3
  • 30. 1 vii  x e 2 x3 dx viii   3x dx 0 1 1   3 x e dx 2 x3 30  e 0 3   1 x3 1  e1  e 0  1 3 1  e  1 3
  • 31. 1 vii  x e 2 x3 dx viii   3x dx 0 1 3x 1   3 x e dx 2 x3  c 30 log 3  e 0 3   1 x3 1  e1  e 0  1 3 1  e  1 3
  • 32. 1 vii  x e 2 x3 dx viii   3x dx 0 1 3x 1   3 x e dx 2 x3  c 30 log 3  e 0 3   1 x3 1  e1  e 0  1 3 1  e  1 Exercise 13C; 2 to 8 ace etc, 9, 10, 3 11, 13, 17 Exercise 13D; 2 to 18 evens, 21*