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[SOLVED] Partial derivative ... check me plz
[tex]f(x,y)=\sqrt[5]{x^7y^4}[/tex]
[tex]f_x(x,y)=\frac 1 5(x^7y^4)^{-\frac{4}{5}}(7x^6y^4)[/tex]
[tex]f_x(x,y)=\frac{7x^6y^4}{5\sqrt[5]{x^7y^4}}[/tex]
Correct?
[tex]f(x,y)=\sqrt[5]{x^7y^4}[/tex]
[tex]f_x(x,y)=\frac 1 5(x^7y^4)^{-\frac{4}{5}}(7x^6y^4)[/tex]
[tex]f_x(x,y)=\frac{7x^6y^4}{5\sqrt[5]{x^7y^4}}[/tex]
Correct?
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