Question

y=4-cosx
find minimum and maximum value of this funcation

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Answer 1

Step-by-step explanation:

y=4-cos x

The maximum value of cos x is 1 and the minimum value is-1

so the maximum value of the function y=4-cos x

=4-(-1)=4+1=5

and minimum value=4-1=3. (answer)

Answer 2

Answer:

(0,3) is a local minima

(π,5) is a local maxima