`Ifint_(-pi)^((3pi)/4)((e^(pi/4)dx)/((e^x+e^(pi/4))(sinx+cosx))=kint_(-pi/2)^(pi/2)secx dx ,t h e nt h ev a l u eofki s` `1/2` (b) `1/(sqrt(2))` (c) `1/(2sqrt(2))` (d) `-1/(sqrt(2))`

Ifint_(-pi/4)^((3pi)/4)((e^(pi/4)dx)/((e^x+e^(pi/4))(sinx+cosx))=kint_(-pi/2)^(pi/2)secx dx ,t h e nt h ev a l u eofki s 1/2 (b) 1/(sqrt(2)) (c) 1/(2sqrt(2)) (d) -1/(sqrt(2))

If int_(-pi//4)^(3pi//4)(e^(pi//4)dx)/((e^(x)+e^(pi//4))(sinx+cosx))=kint_(-pi//2)^(pi//2)secxdx , then the value of k is

Ifint_(-pi/4)^((3pi)/4)(e^(pi/4)dx)/((e^x+e^(pi/4))(sinx+cosx))=kint_(-pi/2)^(pi/2)secx dx , then the value of k is (a) 1/2 (b) 1/(sqrt(2)) (c) 1/(2sqrt(2)) (d) -1/(sqrt(2))

Ifint_(-pi/4)^((3pi)/4)(e^(pi/4)dx)/((e^x+e^(pi/4))(sinx+cosx))=kint_(-pi/2)^(pi/2)secx dx , then the value of k is (a) 1/2 (b) 1/(sqrt(2)) (c) 1/(2sqrt(2)) (d) -1/(sqrt(2))

If int_(-pi)^((3 pi)/(4))((e^((pi)/(4))dx)/((e^(x)+e^((pi)/(4)))(sin x+cos x))=k int_(-(pi)/(2))^((pi)/(2))sec xdx,thenthevalueofkis(1)/(2)(b)(1)/(sqrt(2))(c)(1)/(2sqrt(2))(d)-(1)/(sqrt(2))

int_(-pi//2)^(pi//2)(cosx)/(1-e^(x))dx=

int_(-pi//4)^(pi//4)(e^(x)(x^(3)sinx))/(e^(2x)-1)dx equals

int_-(pi//2)^(pi//2) (dx)/(e^(sinx)+1) is equal to

I=(2)/(pi) int_(-pi//4)^(pi//4) (dx)/((1+e^(sinx))(2-cos2x)) then find 27I^(2)

The value of int_(pi//4)^(pi//4)(e^(x)sec^(2)x)/(e^(2x)-1)dx , is