AM-1018

Amplitude, period and symmetry

A Math · Secondary 3 · Hard · Amplitude, period and symmetry

The function is

y = 3\cos x + 1

for

0^\circ \le x \le 360^\circ

.

Find the maximum value of

y

and the corresponding value of

x

.

Maximum $y = 3$ at $x = 90^\circ$
Maximum $y = 4$ at $x = 0^\circ$ only
Maximum $y = 4$ at $x = 0^\circ$ and $360^\circ$
Maximum $y = 1$ at $x = 0^\circ$ and $360^\circ$

Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.

Loading problem…