Class 12 Sample Question Paper Exam 2021-22

📝  Sample Question Paper (Exam 2021-22)

Q. `sin[pi/3 -sin^{-1} (-1/2)] =`
a) `1/2`
b) `1/3`
c) `-1`
d) `1`

Q. If `y = 5 cos x – 3 sin x`, then `frac{d^2y}{dx^2} =` 

a) `- y`

b) `y`

c) `25y`

d) `9y`