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AP EAMCET · Maths · Indefinite Integration

If \(f(x)=\int \frac{5 x^8+7 x^6}{\left(x^2+2 x^7+1\right)^2} d x(x \geq 0)\) and \(f(0)=0\), then the value of \(f(1)=\)

  1. A \(\frac{-1}{2}\)
  2. B \(\frac{-1}{4}\)
  3. C \(\frac{1}{4}\)
  4. D \(\frac{1}{2}\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\frac{1}{4}\)

Step-by-step Solution

Detailed explanation

\(\begin{aligned} & \text {Given } f(x)=\int \frac{5 x^8+7 x^6}{\left(x^2+2 x^7+1\right)^2} d x \\ & \Rightarrow f(x)=\int \frac{5 x^{-6}+7 x^{-8}}{\left(\frac{1}{x^7}+\frac{1}{x^5}+2\right)^2}=\frac{1}{2+\frac{1}{x^7}+\frac{1}{x^5}}+c \end{aligned}\) Since,…