" 9."(e^(x))/(1+e^(x))

Evaluate: int(e^(-x))/(16+9e^(-2x))\ dx

Evaluate: int(e^(-x))/(16+9e^(-2x))\ dx

Evaluate int(5e^(x))/((e^(x)+1)(e^(2x)+9))dx

int(1)/(1+e^(x))dx= (a) log(1+e^(x)) (b) log((1+e^(x))/(e^(x))) (c) log(1+e^(-x)) (d) -log(e^(-x)+1)

Evaluate int (e^(-x))/(16 + 9e^(-2x)) dx

(d)/(dx){sin^(-1)(e^(x))} is equal to (a) e^(x)sin^(-1)(e^(x)) (b) (e^(x))/(sqrt(1-e^(2x))) (c) (e^(x))/(1-e^(x)) (d) e^(x)cos^(-1)x]]

" (11) "9=int(x^(e^(-1))+e^(x-1))/(x^(e)+e^(x))dx

Integration by partial fraction : int(4e^(x)+6e^(-x))/(9e^(x)-4e^(-x))dx=Ax+B log(9e^(x)-4e^(-x))+c then A+B=.

Integrate 1. (e^(x)-e^(-x))/(e^(x)+e^(-x)) 2. (10x^(9)+10^(x).log_(e)10)/(10^(x)+x^(10))