What is the amplitude of #y=-6cosx#?

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Answer 1 · 2018-02-06T13:55:07

Amplitude of #color(blue)(y=f(x)=-6cos x = 6#

Definition of Amplitude:

For #f(x) = A*Cos(Bx-c)+D#, the Amplitude is |A|

We have

#color(blue)(y=f(x)=-6cos x#

We observe that

#f(x) = -6 cos (x) and A= (-6)#

#:. |A| =6#

Hence,

Amplitude of #color(blue)(y=f(x)=-6cos x = 6#