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MHT CET20243 May 2024Evening ShiftMathematicsDefinite IntegrationActual

The value of the integral _ - 2 ^ 2 (x^2+ -x +x ) x d x is equal to

Options

  1. A0
  2. B^2 2 -4
  3. C^2 2
  4. D^2 2 +4

Correct answer

B. ^2 2 -4

Step-by-step solution

Let I = _ - 2 ^ 2 [x^2+ ( -x +x ) ] x ~d x I = _ - 2 ^ 2 x^2 x ~d x+ _ - 2 ^ 2 ( -x +x ) x ~d x Let I = I ₁+ I ₂ Where I ₁= _ - 2 ^ 2 x^2 x ~d x and I ₂= _ - 2 ^ 2 ( -x +x ) x ~d x Consider aligned & I₁= _ - 2 ^ 2 x^2 x d x & =2 ₀^ 2 x^2 x d x aligned [x^2 x . is an even function ]=2 [x^2 x ~d x- d d x (x^2 ) ( x ~d x ) d x ]₀^ 2 aligned & =2 [x^2 x- 2 x x d x ]₀^ 2 & =2 [x^2 x-2 x x d x ]₀^ 2 aligned =2 [x^2 x-2 (x(- x)- (- x) d x ) ]₀^ 2 aligned & =2 [x^2 x+2 x x-2 x ]₀^ 2 & =2 [ ^2 4 2 +2 2 2 -2 2 . aligned .-0^

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