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OpenStudy (anonymous):

Use parametric Differentiation to find dy/dx, given that x=2t^3cost & y=3e^3t + 4lnt (i have an answer but just need checking)

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OpenStudy (anonymous):

dx/dt= 6t^2cost -2t^3sint dy/dt=9e^3t +4/t

OpenStudy (anonymous):

therefore dy/dx = (9e^3t+4/t)/(2t^2(3cost-tsint))

OpenStudy (anonymous):

aha simplify lol..

OpenStudy (anonymous):

okay let me just work this out... I don't think it simplifies further.

OpenStudy (anonymous):

no i mean my answer lol...

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