`int(e^x(1+x))/(cos^2(x e^x)) dx=``2(log)_ecos(x e^x)+C`(b) `sec(x e^x)+C`(c) `tan(x e^x)+C`(d) `tan(x+e^x)+C`A. `tan(xe^(x))+C`B. `cot(xe^(x))+C`C. `ex^(x)tanx+C`D. none of these

`int(e^x(1+x))/(cos^2(x e^x)) dx=``2(log)_ecos(x e^x)+C`(b) `sec(x e^x

1.	`int(e^x(1+x))/(cos^2(x e^x)) dx=``2(log)_ecos(x e^x)+C`(b) `sec(x e^x)+C`(c) `tan(x e^x)+C`(d) `tan(x+e^x)+C`A. `tan(xe^(x))+C`B. `cot(xe^(x))+C`C. `ex^(x)tanx+C`D. none of these
Answer» Correct Answer - A Put `xe^(x)=t and(xe^(x)+e^(x))dx=dt`. `:." "I=int(1)/(cos^(2)t)dt=intsec^(2)"t dt"=tan t+C`.