Find the period and the amplitude ycos6x7SolutionGiven y c

Find the period and the amplitude.

y=-cos6x/7

Solution

Given y = - cos(6x)/7

compare with AcosBx then
A=-1/7 , B=6

Amplitude = A = -1/7

period = 2pi/l B l

= 2pi/6 = pi/3

or

if i think y = -cos(6x/7)

then Amplitude = -1

period = 2pi/(6/7) = 7pi/3