Q37 / 90 · JEE Main 2021 (27 Aug Shift 1) · Mathematics

∫616logex2logex2+logex2-44x+484dx is equal to

  • Correct answer
    A
    5
  • B
    10
  • C
    8
  • D
    6

Solution

Let ∫616logex2                  dxlogex2+logex2-44x+484

∫616logex2logex2+logex-222dx      .....(1)

We know

∫abfxdx=∫abfa+b-xdx

So, ∫616loge22-x2loge22-x2+loge22-22-x2dx

I=∫616loge22-x2logex2+loge22-x2dx    ....(2)

Add (1) & (2)

2I=∫616dx=10,I=5

Hence, the correct answer is option: 'A'.

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