1 . 0≤x≤π2

• A. $x=\frac{\pi }{6}$
• B. $x=\frac{-3\pi }{2}$
• C. $x=\frac{\pi }{2}$
• D. $x=0$

Answer: Option A

Explanation:

2 . 3sin2x+4cos2x;0≤x≤π2

• A. 8
• B. 3
• C. 6
• D. 4

Answer: Option D

Explanation: