Hi, I couldnt solve to this question may you help me?

IF y = 5cos(x) + 3 then what is the heap of this equation?

(a) All real numbers

(b) alpha<= y <= alpha

(c) -2 <= y <= 10

(d) -2 <= y <= 8

Thank you

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- Nov 11th 2012, 10:17 AMsunriseTrigonometric problem
Hi, I couldnt solve to this question may you help me?

IF y = 5cos(x) + 3 then what is the heap of this equation?

(a) All real numbers

(b) alpha<= y <= alpha

(c) -2 <= y <= 10

(d) -2 <= y <= 8

Thank you - Nov 11th 2012, 10:48 AMPlatoRe: Trigonometric problem
- Nov 11th 2012, 11:05 AMsunriseRe: Trigonometric problem
pardon it did wrong

- Nov 11th 2012, 11:48 AMHallsofIvyRe: Trigonometric problem
From your "candidate" answers, I suspect that "heap" is a mistranslation and that you are asking for the "range" of f(x)= 5 cos(x)+ 3. Since the range of cos(x) itself is -1 to 1, 5 cos(x)+ 3 can be any number from -5+ 3= -2 to 5+ 3= 8.

(If, in fact, you meant "domain", that is, of course, all real numbers.) - Nov 11th 2012, 11:51 AMsunriseRe: Trigonometric problem
Thank you very much