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" (d) "x^(2)-(a+(1)/(a))x+1...

" (d) "x^(2)-(a+(1)/(a))x+1

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int(1+2x^(2)+(1)/(x))e^(x^(2)-(1)/(x))dx is equal to (a) -x e^(x^(2)-(1)/(x))+c (b) x e^(x^(2)-(1)/(x))+c (c) (2x-1) e^(x^(2)-(1)/(x))+c (d) (2x+1) e^(x^(2)-(1)/(x))+c

int(1+2x^(2)+(1)/(x))e^(x^(2)-(1)/(x))dx is equal to (a) -x e^(x^(2)-(1)/(x))+c (b) x e^(x^(2)-(1)/(x))+c (c) (2x-1) e^(x^(2)-(1)/(x))+c (d) (2x+1) e^(x^(2)-(1)/(x))+c

(d)/(dx){(x^(2)-x+1)/(x^(2)+x+1)}=

Differentiate (x^(2)-x+1)/(x^(2)+x+1) with respect to 'x'.

Differentiate (x^(2)-x+1)/(x^(2)+x+1) with respect to 'x'.

If : x = tan25^(@), "then": (tan 155^(@) - tan 115^(@))/(1 + tan 155^(@) * tan 115^(@))= A) (1-x^(2))/(2x) B) (1+x^(2))/(2x) C) (1+x^(2))/(1-x^(2)) D) (1-x^(2))/(1+x^(2))

Let U=sin^(-1)((2x)/(1+x^2)) and V=tan^(-1)((2x)/(1-x^2)) , then (d U)/(d V)= (a) 1//2 (b) x (c) (1-x^2)/(1+x^2) (d) 1

(d)/(dx) {Cos ^(-1) ""(1-x ^(2))/(1+ x ^(2))}=