Question

The function f(x)= x-4x is strictly decreasing on

• A. (-(π)/(3),(π)/(3))
• B. ((π)/(3),(π)/(2))
• C. (-(π)/(3),(π)/(2))
• D. ((π)/(2),π)

Hint:

Strictly decreasing f'(x)<0.

Answer 1

The Correct Option is A