Question

Find the amplitude of f(x) = 8 sin(6x + 4) – 3.

Answer 1

8

Explanation:

Amplitude is the onehalf of highest value minus the lowest value

since sine function has maximum 1 and minimum -1, then the highest value of f(x) is 8(1) - 3 = 5 and the minimum value is 8(-1)-3 = -11.

Therefore the amplitude is (1/2) ( 5 +11) = 8.

Answer 2

9514 1404 393

Answer:

8

Explanation:

The amplitude is the coefficient of the sine function: 8.