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I am given the equation [tex] (x^3 y^4)^5 = x-y [/tex]

my derivative is [tex] 1/ (15x^2 20y^3(x^3y^4)^4)=y' [/tex]

But the book says: [tex] y'=(1-15x^14y^20)/(1+20x^15y^19)[/tex]

Where did I go wrong?

Thanks so much

Chris

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# Homework Help: Implicit Differentiatoin question

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