Question

Find the period and the amplitude of the periodic function.

y = –3 cos 4x

Answer 1

sorry i think its pi/2 since for cosx its 2pi

Answer 2

So this would be a good answer? http://prntscr.com/3lbbec

Answer 3

im not sure about amplitude sorry

Answer 4

Thanks anyways

Answer 5

just checked i think the amplitude is 3 since amplitude is the highest point attained by the graph

Answer 6

OK im just going to go with C i did the math for it :)