∫ 6 16 log e x 2 log e x 2 + log e x 2 - 44 x + 484 d x is equal to

616logex2logex2+logex2-44x+484dx is equal to
  1. 5
  2. 10
  3. 8
  4. 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

Asked in: JEE Main 2021 (27 Aug Shift 1)

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