What is (\partial)/(\partial x)(ln(9+x^2+3y^2)) ?

The answer to (\partial)/(\partial x)(ln(9+x^2+3y^2)) is (2x)/(9+x^2+3y^2)

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(\partial)/(\partial x)(ln(9+x^2+3y^2))

\frac{\partial}{\partial x} (ln (9 + x^{2} + 3 y^{2}))

\frac{2 x}{9 + x ^{2} + 3 y ^{2}}

Solution steps

\frac{\partial}{\partial x} (ln (9 + x^{2} + 3 y^{2}))

Treat

y

as a constant

Apply the chain rule:

\frac{1}{9 + x ^{2} + 3 y ^{2}} \frac{\partial}{\partial x} (9 + x^{2} + 3 y^{2})

= \frac{1}{9 + x ^{2} + 3 y ^{2}} \frac{\partial}{\partial x} (9 + x^{2} + 3 y^{2})

\frac{\partial}{\partial x} (9 + x^{2} + 3 y^{2}) = 2 x

= \frac{1}{9 + x ^{2} + 3 y ^{2}} \cdot 2 x

Simplify

\frac{1}{9 + x ^{2} + 3 y ^{2}} \cdot 2 x : \frac{2 x}{9 + x ^{2} + 3 y ^{2}}

= \frac{2 x}{9 + x ^{2} + 3 y ^{2}}

\frac{d}{d x} (\frac{6}{( x - 1 ) ^{4}})

\frac{d}{d x} (sin (x^{2} + 2))

\frac{d}{d x} (\frac{sin ( x )}{( x + 1 ) ^{2}})

\frac{\partial}{\partial x} (x^{2} + 8)

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What is (\partial)/(\partial x)(ln(9+x^2+3y^2)) ?
The answer to (\partial)/(\partial x)(ln(9+x^2+3y^2)) is (2x)/(9+x^2+3y^2)