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คณิตศาสตร์ 60 เฟรม กาญจนรัตน์
- 17. a, b c a b
c
a b
a, b c a
b c a b °
Euclid's Elements
- 19. ABC
a,b c a b c
a b
a b
c
- -
a b
- 21. • a b c
• a b <c
• a b >c
- 26. - - - - - - - - (1)
1) 10
- - - - - - - - (2)
10
2) 1) - - - - - - - - -
-
- 27. --------
(1)
1) 1000
- - - - - - - - (2)
1000
1) 10
- - - - - - - - (3)
10
2) 3) - - - - - - - -
--
- 30. 1 2
1 2
1.1 1.2 1.3 1.4 1.5
1.21 1.44 1.69 1.96 2.25
1.4 1.5
1.4 1.5
1.41 1.42 1.43
1.4 1.51.9881 2.0164 2.0449
1.41
1.42
- 31. 1.411 1.412 1.413 1.414 1.415
1.990921 1.993744 1.996569 1.999396 2.002225
1.414 1.415
1.4141 1.4142 1.4143
1.99967881 1.99996164 2.00024449
1.4142
1.4143 1.41421 1.41422
1.9999899241 2.0000182048
1.41421 1.41422
- 37. 2.
15 16
10 9
165 169
- 38. 1.
3 4
3 4
9 13 16
2. 13 9 16
16
3.5
3.5 3.6 3.7
12.25 12.96 13.00 13.69
3. 13
12.96 13.69
3.60 3.603.61
12.9600 13.0000 13.0321
- 39. 4. 13
12.9600 13.0321 13.0321
3.605
3.605 3.606
12.996025 13.000000 13.003236
5. 13
13.003236 12.996025
3.606
3.61
- 40. 3.
1 100
10 3.162 100 10.000 0.1000
11 3.317 121 1.331 0.0909
12 3.464 144 1.728 0.0833
13 3.606 169 2.197 0.0769
14 3.742 196 2.744 0.0714
15 3.873 225 3.375 0.0667
16 4.000 256 4.096 0.0625
- 42. x
ax + b = 0 a, b
a#0
a=b b=a a b
1. a+b=c c=a=b
- 43. a=b b=c a=c
a, b c
x=5+7 5 + 7 = 12
x = 12
x = -3y -3y = 0.5
x = 0.5
- 44. a=b a+c=b+c
a, b c
1. a=5 a+3=5+3
3
-7
2. x+7=2 (x + 7) -7 = 2 -
7
- 45. a =b ca = cb a,
b c
3
1. m + 1 = 2n
3(m + 1) = 3(2n)
2. -3x = 15 -1
3
-3x = 15-3 -3
-3
- 46. 2x = 0 1x+ 3 = 0 8y – 11 =
9y + 7
2
2x – 5 = 0
- 47. 15x + 9 = 69
15x + 9 = 69
9
15x + 9 – 9 = 69 – 9
15x = 60
15
.
. 15x – 15 .
. = 60
– 15
X =
- 53. 2
n
a1,a2,...,an x1,x2,...,xn
b
3
x1,x2,x3
x,y,z
n–1 (hyperplane)
n
- 55. (simultaneous
equations)
t m = V/T
x (VU−WT) / V y
(WT−VU) / T
T = p−h, U = h, V = q−k, W=k
t 0 (h,
k) 1 (p, q) t 0
1
(interpolation) t
