Question

I need help finding the maximum y-value of a function without graphing it.

Answer 1

f(x) = 2cos(x)

Answer 2

@airyana1114

\[y = 2\cos(x) \]

I think the maximum height would be 2

Answer 3

we can use the unit circle to figure this out.

Answer 4

so right away we know that cosine's maximum value is going to be 1 from the unit circle, and we multiply that by 2 the number in front of the equation to get the maximum value

Answer 5

oh okay, thank you :)