Question

Identify the maximum and minimum values of the function y = 10 cos x in the interval [-2π, 2π]. Use your understanding of transformations, not your graphing calculator.

Answer 1

@mebs

Answer 2

I know you know how to do this -.-'''. What angle makes cos0 = and what angle makes cos0=-1 ?

Answer 3

so 1 and -1... what angles?

Answer 4

maximum and minimum values of cos x in this interval is 1 and -1

and the graph is stretched by a factor of 10 parallel to y-axis

Answer 5

? is that right?

Answer 6

yea its 10 and -10...

Answer 7

try it yourself before bringing it to the website... alright.

Answer 8

its not 1, -1, its 10, -10?

Answer 9

yea

Answer 10

I said that makes cos 0 = 1 and -1 so that would be 0 and pi.