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AP EAMCET · Maths · Indefinite Integration

\(\int \frac{x^3-x^2+x-1}{x-1} d x\) is equal to

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

Answer & Solution

Correct Answer

(C) \(\frac{x^3}{3}+x+c\)

Step-by-step Solution

Detailed explanation

\(\begin{aligned} I & =\int \frac{x^3-x^2+x-1}{x-1} d x \\ & =\int \frac{x^2(x-1)+(x-1)}{(x-1)} d x=\int \frac{(x-1)\left(x^2+1\right)}{(x-1)} d x \\ I & =\int\left(x^2+1\right) d x \Rightarrow I=\frac{x^3}{3}+x+C\end{aligned}\)