Can come one explain how to take the derivative of e^6xsin(x).?

Can come one explain how to take the derivative of e^6xsin(x).

mohanrao d2015-06-30T10:50:09Z

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let y = e^(6x)* sin(x)

y ' = e^(6x) d [ sin(x)] + sin(x) d[ e^(6x) ]

= e^(6x)* cos(x) + sin(x)* e^(6x)*6

= e^(6x) [ cos (x) + 6 sin(x) ]