If ∫1/x+x^5 dx=f(x)+c, then ∫ x^4 /...
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If ( int frac{1}{x+x^{5}} d x=f(x)+c, ) then ( int frac{x^{4}}{x+x^{5}} d x= )
1) ( log |x|+f(x)+c_{1} )
2) ( log |x|-f(x)+k )
3) ( x f(x)+c_{1} )
4) ( x log |x|+c_{1} )

JEE/Engineering Exams
Maths
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If ∫1/x+x^5 dx=f(x)+c, then ∫ x^4 / x+x^5 dx=
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( begin{aligned} & int frac{x^{4}}{x+x^{5}} d x=int frac{left(x^{4}+2right)-t}{xleft(1+x^{4}right)} d x &=int frac{d x}{x}-int frac{d x}{xleft(1+x^{4}right)} &=log |x|-f(x)+k end{aligned} )

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