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Find the derivative of y=2sinxcosx.
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look, 2sinxcosx is an expand for the rule ,sin2x so if u take sin2x and make derivative then : it will be (cos2x)(2)
yep...
would the anwer be the same if i got 2cos^2x-2sin^2x
find what's cos2x = ... there's an identity....
yeah it is the same
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