AibhlinnM409882 AibhlinnM409882

Today at 7:08 PM
Mathematics

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If f(x) = 4x(sin x + cos x) , find

If f(x) = 4x(sin x + cos x) , find class=

Answer :

ArjenK226699 ArjenK226699

Today at 7:13 PM

It was found that

[tex]f^{\prime}(x)=4xcos(x)-4xsin(x)+4sin(x)+4cos(x)[/tex]

Then, evaluating at x=4,

[tex]f^{\prime}(4)=4*4cos(4)-4*4sin(4)+4sin(4)+4cos(4)=20cos(4)-12sin(4)[/tex]

Therefore, the exact answer is 20cos(4)-12sin(4)

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