## anonymous one year ago find the period and amplitude of the periodic function? y = -5 cos 6x

1. Nnesha

$\huge\rm y = a \cos (bx)$ simple standard form where a is amplitude and to find period p = 2pi/b

2. anonymous

Hmm. The amplitude of this function seems like -5. Because cos6x cannot get a value more then 1, so -5 times 1 equals -5. It swings back and forth between -5 and +5. But I am not sure about the period.