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AP EAMCET · Maths · Indefinite Integration

\(\int(x+1)(x+2)^4(x+3) d x\) is equal to

  1. A \(\frac{(x+1)^2}{2}+\frac{(x+2)^2}{5}+\frac{(x+3)^2}{2}+C\)
  2. B \(\frac{(x+2)^7}{7}-\frac{(x+2)^5}{5}+C\)
  3. C \(\frac{(x+2)^7}{7}+\frac{(x+2)^5}{5}+C\)
  4. D \(\frac{(x+3)^7}{7}-\frac{(x+3)^5}{5}+C\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\frac{(x+2)^7}{7}-\frac{(x+2)^5}{5}+C\)

Step-by-step Solution

Detailed explanation

Let \(x+2=t\), then \(d x=d t\) \[ \begin{aligned} I & =\int(t-1)(t)^4(t+1) d t=\int\left(t^2-1\right) t^4 d t \\ & =\int\left(t^6-t^4\right) d t \\ & =\frac{t^7}{7}-\frac{t^5}{5}+C \\ & =\frac{(x+2)^7}{7}-\frac{(x+2)^5}{5}+C \end{aligned} \]
From AP EAMCET
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