## johnnyalln Group Title What is the minimum value of the function: $y=3\cos 2Pix$ one year ago one year ago

1. satellite73

minimum value of cosine is -1 minimum value of 3 times cosine is -3

2. johnnyalln

@satellite73 @Hero

3. johnnyalln

got ya, so if the problem did not have a 3, it would be -1? But since it is a 3 there, it is -3?

4. satellite73

yes

5. johnnyalln

got it. thanks!

6. satellite73

yw