Question

The derivative of a function f is given by $f'(x)=\frac{x-5}{\sqrt{x^2+4}}$. Then the interval in which f is increasing, is

• A. (5,∞)
• B. (0,∞)
• C. (-4,∞)
• D. (-∞,-4)
• E. -∞,5

Answer 1

Answer: (A)

(5,∞)

Answer 2

The correct option is (A): (5,∞)