Differentiate the following with respect to x:
cos 3x sin 5x
To Find: Differentiation
NOTE : When 2 functions are in the product then we used product rule i.e 
Let us take y = cos 3x sin 5x
So, by using the above formula, we have
sin5
( - 3sin 3
) + cos 3
(5cos 5
) = 5cos (3
cos (5
) - 3 sin (
) 3sin (3
)
Differentiation of y = cos 3x sin 5x is 5cos (3
cos (5
) - 3 sin (
) 3sin (3
)
2