` "I=int(dx)/(1+e^(x))`

I=int(e^x)/(e^(x)-1)dx

int(e^x dx)/(1-e^(x))

int(1)/(e^(-x)) dx

(i) int(e^(x))/(1+e^(x))dx" "(ii) int (e^(x)) /((1+e^(x))^(4))dx

Evaluate: (i) int xe^(x)^^2dx (ii) int(e^(2x))/(1+e^(x))dx

Ecaluate the following: (i) int(sec^(2)x)/(3+tanx)dx " (ii) " int(e^(x)-e^(-x))/(e^(x)+e^(-x))dx (iii) int(1-tanx)/(1+tanx)dx " (iv) " int(1)/(1+e^(-x))dx

I = int(dx)/(e^(x) + 4.e^(-x)) dx =

int(e^(x)dx)/(e^(x)-1)

Evaluate the integrals : I = int_(0)^(1) (e^(x))/( 1 + e^(2x)) dx ,