The Student Room Group

Is this right?

The question was y = cos^2(3x+10)

I somehow got to dy/dx = -6sincos(3x+10) by using the chain rule

Please help, thanks.
Reply 1
It should be -6sin(3x+10)cos(3x+10)
Reply 2
Original post by B_9710
It should be -6sin(3x+10)cos(3x+10)


Ahh thanks, so I was kinda on the right lines lol

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