MCQ
$\int \frac{e^x(1+x)}{\cos ^2\left(e^x x\right)} d x=\ ...........$
- A$-\cot \left(e x^x\right)+c$
- B$\tan \left(x e^x\right)+c$
- C$\tan \left(e^x\right)+c$
- D$\cot \left(e^x\right)+c$
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$($ કે જ્યાં $det(B)$ એ શ્રેણિક $B$ નો નિશ્ચાયક છે )