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JEE Mains · Maths · STD 12 - 7.2 definite integral

माना \(f(x)=\max \{|x+1|,|x+2|, \ldots,|x+5|\}\) है।तब \(\int_{-6}^0 f ( x ) dx\) बराबर है \(...............\)

  1. A \(20\)
  2. B \(40\)
  3. C \(21\)
  4. D \(41\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(21\)

Step-by-step Solution

Detailed explanation

\(f(x)=\max \{|x+1|,|x+2|,|x+3|,|x+4|,|x+5|\}\) \(\int_{-6}^{0} f(x) d x=\int_{-6}^{-3}|x+1| d x+\int_{-3}^{0}|x+5| d x\) \(=-\int_{-6}^{-3}(x+1) d x+\int_{-3}^{0}(x+5) d x\) \(=-\left[\frac{x^{2}}{2}+x\right]_{-6}^{-3}+\left[\frac{x^{2}}{2}+5 x\right]_{-3}^{0}\)…
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