Question

If $f(x) = \begin{cases} \cos x & for\ x\geq0 \\\ 2x &for\ x\lt0 \end{cases}$, then the value of $\displaystyle\int^{\frac{\pi}{2}}_{-2}dx$ is equal to

• A. 2
• B. -2
• C. -3
• D. 3
• E. 0

Answer 1

Answer: (C)

-3

Answer 2

The correct option is (C) : -3