Question: If f (ac) = 2x ( sin a + cos ac), find f' (x ) = 2x cos(x ) - 2x sin (x ) +

If f (ac) = 2x ( sin a + cos ac),

If f (ac) = 2x ( sin a + cos ac), find f' (x ) = 2x cos(x ) - 2x sin (x ) + 2 sin(x ) + 2 cos(x) f' (5) =

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