Differentiation Help - A2 Maths SUPER CONFUSED
I differentiated y= 2sin2x +cos2x to dy/dx = 4cos2x-2sin2x. I am asked to find the stationary points of the curve. However, I don't know what to do after I have done 4cos2x-2sin2x = 0.
Solutionbank has it written as:
4cos2x-2sin2x = 0
4 - 2tan2x = 0
How did they get 4 - 2tan2x
Solutionbank has it written as:
4cos2x-2sin2x = 0
4 - 2tan2x = 0
How did they get 4 - 2tan2x
Hint: divide both sides by cos2x.
(edited 3 years ago)
Original post by MarkFromWales
Hint: divide both sides by cos2x.
Thank you so much!
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