AM-1022

Amplitude, period and symmetry

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

A function is given by

y = 5\cos x + 1

for

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

.

Find the maximum value of

y

and the corresponding value of

x

.

Maximum value $6$ at $x = 0^\circ$
Maximum value $6$ at $x = 90^\circ$
Maximum value $5$ at $x = 0^\circ$
Maximum value $6$ at $x = 0^\circ$ or $360^\circ$

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