Question

The range of F(x) = 5cosx is _____.



-5 ≤ F(x) ≤ 5

-5 ≤ F(x) ≤ 0

0 ≤ F(x) ≤ 5

Answer 1

the range of cos(x) is \(\large\color{black}{ [-1,1] }\), the 5 stretches it by 5 both ways, so it will be, \(\large\color{black}{ [-5,5] }\) .

Answer 2

I'll get a graph to chec, in a sec.

Answer 3

https://www.desmos.com/calculator/wwiklpzygo

Answer 4

I think the first option is your answer, because the natural limits of the function cos(x), are:
\[-1\le \cos x \le +1\]
then we conclude that:
\[-5\le 5*\cos (x)\le +5\]

Answer 5

Yes;)

Answer 6

thank you both

Answer 7

@mudwagaman9 thank you!