Asked by Josh
how do i find the amplitude, period, phase shift of y=2 cos(-4t-(-4 pi/3))
Answers
Answered by
drwls
The amplitude is the number "2" in front of the trig function.
The frequency (f) is obtained by setting the number "4" in front of "t" equal to 2 pi f. Then solve for f. You can ignore the minus sign.
The phase shift is the 4pi/3 in the inner arentheses. It would be negative if there were a + in front of t, but in this case it is positive.
The frequency (f) is obtained by setting the number "4" in front of "t" equal to 2 pi f. Then solve for f. You can ignore the minus sign.
The phase shift is the 4pi/3 in the inner arentheses. It would be negative if there were a + in front of t, but in this case it is positive.
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