If f(x) = 2x - x², then what is value of f(x + 2) + f(x - 2) = ? at x = 0

•  - 8

•  - 4

• 8

• 4

What is the domain of the function f(x) = cos^-1(x – 2) ?

• [ - 1, 1]

• [1, 3]

• [0, 5]

• [ - 2, 1]

Let y = 3x² + 2. If x changes from 10 to 10.1, then what is the total change in y ?

• 4.71

• 5.23

• 6.03

• 8.01

What is the minimum value of |x – 1|, where x ∈ R ? 

• 0

• 1

• 2

• - 1

If f(x) = 3x² – 5x + p and f(0) and f(1) are opposite in sign, then which of the following is correct ?

• -2 < p < 0

• -2 < p < 2

• 1 < p < 2

• 3 < p < 5