AM-2569

Graphs of sine and cosine

A Math · Secondary 4 · Easy · Graphs of sine and cosine

The function

f

is defined by

f(x) = 3 - 4\cos x

for

0 \le x \le 2\pi

. State the amplitude and period of

f

.

Amplitude $=4$ , period $=2\pi$
Amplitude $=3$ , period $=2\pi$
Amplitude $=4$ , period $=\pi$
Amplitude $=1$ , period $=2\pi$

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