Undergraduate

We have determined that f ( x ) = 4 cos ( x ) 4 sin ( x ) . We must now determine any

We have determined that
f(x)=4 cos(x)4 sin(x).
We must now determine any values where
f(x)=0.
To do so, we set
4 cos(x)4 sin(x)
equal to 0 and solve for x over the interval
0 x 2.
Doing so gives the following result. (Enter your answers as a comma-separated list.)
x =
We recall that these values are called the critical numbers of f in the interval
0 x 2.

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