(e^(x))/(13)*(1+e^(x))(2+e^(x)))/((1+e^(x))(2+e^(x)))

int(e^(x))/((1+e^(x))(2+e^(x)))dx

(e^(2x)+2e^(x)+1)/(e^(x))

int(e^(x))/((e^(x)-1)(e^(x)+2))dx=

int(e^x)/((1+e^x)(2+e^x))dx

int(e^x)/((1+e^x)(2+e^x))dx

If y=x+e^(x), then (d^(2)x)/(dy^(2)) is (a) e^(x)(b)-(e^(x))/((1+e^(x))^(3))(c)-(e^(x))/((1+e^(x))^(3))(d)(-1)/((1+e^(x))^(3))

int (e^(x))/((e^(x)+2)(e^(x)-1))dx=

if int dx/(e^(x) (e^(x)+1)^(2))=(2e^(x)+1)/(e^(x)(e^(x)+1))+ k log|1+e^(-x)|+c then the value of k is -

(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]]