Derivative of x3+y5x^{3} + y^{5} with respect to yy

The calculator will find the derivative of x3+y5x^{3} + y^{5} with respect to yy, with steps shown.

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Your Input

Find ddy(x3+y5)\frac{d}{dy} \left(x^{3} + y^{5}\right).

Solution

The derivative of a sum/difference is the sum/difference of derivatives:

(ddy(x3+y5))=(ddy(x3)+ddy(y5)){\color{red}\left(\frac{d}{dy} \left(x^{3} + y^{5}\right)\right)} = {\color{red}\left(\frac{d}{dy} \left(x^{3}\right) + \frac{d}{dy} \left(y^{5}\right)\right)}

Apply the power rule ddy(yn)=nyn1\frac{d}{dy} \left(y^{n}\right) = n y^{n - 1} with n=5n = 5:

(ddy(y5))+ddy(x3)=(5y4)+ddy(x3){\color{red}\left(\frac{d}{dy} \left(y^{5}\right)\right)} + \frac{d}{dy} \left(x^{3}\right) = {\color{red}\left(5 y^{4}\right)} + \frac{d}{dy} \left(x^{3}\right)

The derivative of a constant is 00:

5y4+(ddy(x3))=5y4+(0)5 y^{4} + {\color{red}\left(\frac{d}{dy} \left(x^{3}\right)\right)} = 5 y^{4} + {\color{red}\left(0\right)}

Thus, ddy(x3+y5)=5y4\frac{d}{dy} \left(x^{3} + y^{5}\right) = 5 y^{4}.

Answer

ddy(x3+y5)=5y4\frac{d}{dy} \left(x^{3} + y^{5}\right) = 5 y^{4}A