What is the answer for question 1) ? http://postimg.org/image/grjobmz2f/(Reminder): this is 1 question.
You need to use the following formula to evaluate the amplitude, period and phase shift of the given function `y =` `-4cos 3x + 4` :
`y = Acos(Bx - C) + D`
A represents the amplitude, hence, `A = 4.`
You may evaluate the period using the formula `T = (2pi)/B` , hence `T = (2pi)/3.`
You may evaluate the phase shift using the formula phase shift `= C/B` . Since `C = 0` ,yields that the phase shift is `C/B = 0` .
Hence, evaluating the amplitude, period and phase shift of the given function yields `A = 4, T = (2pi)/3` , phase shift `C/B = 0.`