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AP EAMCET · Maths · Indefinite Integration

If \(\int x^3 e^{5 x} d x=\frac{e^{5 x}}{5^4}[f(x)]+C\), then \(f(x)\) is equal to

  1. A \(\frac{x^3}{5}-\frac{3 x^2}{5^2}+\frac{6 x}{5^3}-\frac{6}{5^4}\)
  2. B \(5 x^3-5^2 x^2+5^3 x-6\)
  3. C \(5^2 x^3-15 x^2+30 x-6\)
  4. D \(5^3 x^3-75 x^2+30 x-6\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(5^3 x^3-75 x^2+30 x-6\)

Step-by-step Solution

Detailed explanation

We have given that, \(\int x^3 e^{5 x} d x=\frac{e^{5 x}}{5^4}\left[\int(x)\right]+c\) By using the method of intergration by parts, we get…