Question

How do you find the amplitude and period of a function y=-5 cos 6x?

Answer 1

amplitude = 5
period `=pi/3`

Explanation:

For the cosine function `color(red)(y=acosbx)`

The amplitude = |a| and period `=(2pi)/b`

here a = -5 and b= 6

`rArr"amplitude"=|-5|=5`

`" and period"=(2pi)/6=pi/3`