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NDA2022MathematicsIndefinite IntegrationActual

If I₁= e^x d x e^x+e^ -x and I₂= d x e^ 2 x +1 , then what is I₁+I₂ equal to?

Options

  1. Ax 2 +c
  2. Bx+c
  3. C(e^x+e^ -x )+c
  4. D(e^x-e^ -x )+c

Correct answer

B. x+c

Step-by-step solution

aligned & I₁= e^x e^x+e^ -x d x= e^x e^x+ 1 e^x d x & = e^ 2 x e^ 2 x+1 d x & I₁+I₂= e^ 2 x +1 e^ 2 x +1 d x= 1 d x & =x+C aligned

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