Differentiate the following with respect to x:
sin x sin 2x
To Find: Differentiation
NOTE : When 2 functions are in the product then we used product rule i.e 
Let us take y = sin x sin 2x
So, by using the above formula, we have
sin
(2cos 2
) + sin 
(sin
) = 2sin
)cos 
2
+ sin 
(sin
)
Differentiation of y = sin x sin 2x is 2sin
)cos 
2
+ sin 
(sin
)
1