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Iyarkanitham final
1.
1
2.
mtpdhrp fTz;lu; khupak;khs; fy;tpapay;
fy;Yup nfhy;yk;ghisak; <NuhL – 2. ngau;: m.kupak;khs; tFg;G : xd;gjhk; tFg;G jiyg;G : ,aw;fzpjk; gpupT : fzpjk; 2
3.
4.
1.,aw;fzpj Nfhitfs; 2.gy;YWg;Gf; Nfhitfs; 3.kPjpj;Njw;wk; 4.fhuzpj;Njw;wk; ;
4
5.
5.,aw;fzpj Kw;nwhUikfs; 6. gy;YWg;Gf;
Nfhitfis fhuzpg;gLj;Jjy; 7.Nehpar; rkd;ghLfs; 5
6.
cl;$Wfs; ghlk;: XUWg;Gf;
Nfhit xNu xU cWg;igf;nfhz;l gy;YWg;Gf; Nfhit XUWg;Gf; Nfhit vdg;gLk;. <UWg;Gf; Nfhit ,uz;L cWg;Gfis kl;LNk nfhz;l gy;YWg;Gf; Nfhit <UWg;Gf; Nfhit vdg;gLk;. 6
7.
%TWg;Gf; Nfhit %d;W cWg;Gfis
kl;LNk nfhz;l gy;YWg;Gf; Nfhit %TWg;Gf; Nfhit vdg;gLk;. kPjpj;Njw;wk; P(x)-I (x-a) vd;w Nehpa gy;YWg;Gf; Nfhitahy; tFj;jhy; fpilf;Fk; kPjp p(a) MFk;
8.
1.,aw;fzpj Nfhitfs; $l;ly;>fopj;jy;>ngUf;fy;>tFj;jy; vd;w
ehd;F mbg;gil fzpjr; nray;fs;>mLf;Ff;Fwpfs; my;yJ %yq;fisf; fz;nlLj;jy; Mfpatw;iw gad;gLj;jp vz;fs; kw;Wk; khwpfspd;,izg;igf;nfhz;L mikf;fg;gLk; Nfhitjhd; xU ,aw;fzpjf; Nfhit v.fh: 7, x, 2x-3y+1 8
9.
2.gy;YWg;Gf; Nfhitfs; tFj;jpfspy; khwpfs;
,y;yhjJk;>%yf;Fwpfspd; cs;Ns khwpfs; ,y;yhjJk; kw;Wk; kpif KOf;fis mLf;Ffshff; nfhz;l> khwpfisf; nfhz;L mikAk; ,aw;fzpjf;Nfhit xU gy;Ywg;Gf; Nfhit MFk;. v.fh: p(x)= 2x3 - x2 + 4x + 1 9
10.
3.kPjpj; Njw;wk; P(x) vd;gJ
VNjDk; xU gy;YWg;Gf; Nfhit kw;Wk; a vd;gJ VNjDk; xU nka;naz; vd;f. P(x)-I (x-a) vd;w Nehpa gy;YWg;Gf; Nfhitahy; tFj;jhy; fpilf;Fk; kPjp p(a) MFk; v.fh: 4x3-5x2+6x-2 I (x-1) My; tFj;jhy; fpilf;Fk; kPjpiaf; fhz;f. 10
11.
jPh;T : P(x) =
4x3-5x2+6x-2 vd;f. x-1 d; g+r;rpak; 1. P(x) I x-1 My; tFj;jhy; fpilf;Fk; kPjp p(1) MFk;. ,g;NghJ> P(1) = 4(1)3 - 5(1)2 + 6(1) – 2 =4–5+6–2= 3 /kPjp = 3. 11
12.
4.fhuzpj;Njw;wk; P(x)
vd;gJ VNjDk; xU gy;YWg;Gf; Nfhit kw;Wk; a vd;gJ VNjDk; xU nka;naz; vd;f. P(a)=0vdpy;> (x-a) vd;gJ p(x) -d; xU fhuzp MFk;. Fwpg; G: P(x) –d; xU fhuzp (x-a) vdpy;> P(a) = 0 MFk;. 2013-1-6 12
13.
v.fh: (x-5) vd;gJ
p(x) = 2x3 - 5x2 - 28x + 5 vd;w gy;YWg;Gf; Nfhitapd; xU fhuzpah vdj; jPu;khdp. jPh;T : fhuzpj;Njw;wj;jpd; gb p(5 ) = 0 vdpy; (x-5) vd;gJ p(x) -d;; xU fhuzpahFk;. ,g;NghJ> P(5) = 2(5)3 – 5(5)2 – 28(5) + 15 = 2(125) – 5(25) – 140 + 15 = 250 – 125 – 140 + 15 = 0 / (x-5) vd;gJ p(x) = 2x3 - 5x2 - 28x + 5 - d; xU fhuzpMFk;. 13
14.
5.,aw;fzpj Kw;nwhUikfs;
xU rkd;ghL mjpYs;skhwpfspd;vk;kjpg;gpw;f;Fk; cz;ikahfNt ,Uf;Fkhdhy;> mr;rkd;ghL xU Kw;nwhUik vdg;gLk.; v.fh:1 (a+b)2 = a2 + 2ab + b2 (2a+3b)2 = (2a)2+2(2a)(3b)+(3b)2 = 4a2+12ab+9b2 v.fh:2 (a-b)2 = a2 - 2ab + b2 (3x-4y)2 = (3x)2-2(3x)(4y)+(4y)2 14 = 9x2-24xy+16y2
15.
v.fh:3
(a+b) (a-b) = a2 - b2 (4x+5y)(4x-5y)=(4x)2-(5y)2 =16x2-25y2 v.fh:4 (x+a) (X+b) = x2 + (a+b)x + ab (y+7)(y+5)=y2+(7+5)y+(7)(5) =y2+12y+35 15
16.
v.fh:5
(x + y + z)2 = x2 + y2 + z2 + 2xy + 2yz + 2zx (2x+3y+5z)2 = (2x)2 + (3y)2 + (5z)2 + 2(2x)(3y) + 2(3y)(5z) + 2(5z)(2x) = 4x2 + 9y2 + 25z2 + 12xy + 30yz + 20zx ,NjNghd;W> (x - y + z)2 = x2 + y2 + z2 - 2xy - 2yz + 2zx (x + y - z)2 = x2 + y2 + z2 + 2xy - 2yz - 2zx (x - y - z)2 = x2 + y2 + z2 - 2xy + 2yz - 2zx 16
17.
v.fh: 6 (x
+ a) (x+b) (x+c) = x3 + (a + b + c)x2 +( ab + bc + ca)x + abc (x + 2) (x + 5) (x + 7) = x3 + (2 + 5 + 7)x2 + [ (2)(5) + (5)(7 )+ (7)(2)]x + (2)(5)(7) = x3 + 14x2 + (10 + 35 + 14) x + 70 = x3+14x2+59 x+70 17
18.
v.fh:7
(x + y)3 = x3 + 3x2y + 3xy2 + y3 (x + y)3 = x3 + y3 + 3xy(x + y) (3a + 4b)3 = (3a)3 + 3(3a)2(4b) + 3(3a)(4b)2 + 4(b)3 = 27a3 + 108a2b +144ab2 + 64b3 ,NjNghd;W> (x - y)3 = x3 - 3x2y+3xy2 - y3 (x - y)3 = x3- y3 - 3xy(x-y) 18
19.
v.fh: 8
x3 + y3 = (x + y)3 - 3xy (x + y) x+y=4 kw;Wk;> xy=5 vdpy;> , x3+y3 If;fhz;f. jPu;T : x3 + y3 = (4)3-3(5)(4) =64-60 =4 ,NjNghd;W> x3 - y3 = (x - y)3 + 3xy (x - y) 19
20.
6. gy;YWg;Gf; Nfhitfis
fhuzpg;gLj;Jjy; : a (b + c) = ab + ac vd;gij khw;WKiwapy; ab + ac = a(b + c) vd vOjyhk;. ,k;Kiwapy; ab + ac vd;gij a(b + c) vd vOJtJ fhuzpgLj;Jjy; vdg;gLk;. ab kw;Wk; ac vd;w ,uz;L cWg;Gfspy; a vd;gJ xU nghJf; fhuzp. 20
21.
v.fh: fhuzpg;gLj;Jf :
4x2 + 12xy +9y2 jPu;T : 4x2 + 12xy + 9y2 = (2x2) + 2(2x)(3y) + (3y)2 / [(a +b)2 = a2 +2ab +b2 ] = (2x+3y)2 21
22.
7.Nehpar; rkd;ghLfs;
a , b Mfpad khwpypfshfTk; kw;Wk; a # 0 vdTk; nfhz;l ax + b = 0 vd;wike;j xU khwpapy; cs;s Neupar; rkd;ghLfis ; epidT$u;e;J > ,U khwpfspy; xU Nrhb Neupar; rd;ghLfisf; fhzy;. ,U khwpfspy; xU Nrhb Neupar; rkd;ghLfs; a1x + b1y = 0 a2 x + b 2 y = 0 22
23.
v.fh : gpd;tUk; xU
Nrhb rkd;ghLfis gpujpapLk; Kiwapy; jPu;f;f. 2x + 5y = 2 kw;Wk; x + 2y = 3 jPu;T : 2x + 5y = 2 ____ (1) x + 2y = 3 ____ (2) rkd;ghL (2) ypUe;J x = 3 - 2y ____ (3) rkd;ghL (1) y; gpujpapl > 2(3 - 2y) + 5y = 2 6 - 4y + 5y = 2 23
24.
-4y + 5y
= 2 – 6 / y=-4 y=-4 vd (3) y; gpujpapl> X = 3 – 2 ( - 4) = 3 + 8 = 11 vdf; fpilf;fpwJ. / jPu;T x = 11 kw;Wk; y = -4 24
25.
25
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