Question

MEDAL REWARDED
Find the period of the function.
y = -5 cos x

Answer 1

@hartnn

Answer 2

the period of A cos (wx+b) will be 2pi/w
what is w here = ... ?

Answer 3

compare cos (wx+b) with x
w=..?
b=...?

Answer 4

When you find w
the Period T just = 2pi /w

Answer 5

Im not sure how to find w and b? Can you give me the answer and how you got it? this is just a practice problem so it doesnt count for anything, i have others im going to do on my own once i understand this @hartnn

Answer 6

x can be written as 1x+0 , right ?
so comparing it with wx+b, we get
w=1, b =0
got this ?

Answer 7

Yeah so far

Answer 8

good, so period is just 2pi/w
here, just 2pi
thats it!

Answer 9

Thanks!