Let f : 0 , 2 → R be a function which is continuous on 0 , 2 and is differentiable on 0 , 2   f 0…

Let f:0,2R be a function which is continuous on 0,2 and is differentiable on 0,2 f0=1. Let Fx=0x2f tdt for x0,2. If F'x=f'x for all x0,2, then F2 equals
  1. e2-1
  2. e4-1
  3. e-1
  4. e4

Solution

F0=0

F'x=2x fx=f'x

fx=ex2+c

fx=ex2     f0=1

Fx=0x2ex dx 

Fx=ex2-1   F0=0

 F2=e4-1

Asked in: JEE Advanced 2014 (Paper 2)

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