I have tried countless times to get to the proposed answer of but my numerator never simplifies to 16xy. So if some one can show me how to do this I would really appreciate it. Thank you
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Originally Posted by sakonpure6 We will assume that $y=f(x)$. $3x^2+3y^2y'=6y+6xy'\\6x+6y(y')^2+3y^2y''=6y''+6y' +6xy''$
Last edited by Plato; May 15th 2014 at 04:32 PM.
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