What is (\partial)/(\partial y)(sqrt(4-x^2-6y^2)) ?

The answer to (\partial)/(\partial y)(sqrt(4-x^2-6y^2)) is -(6y)/(sqrt(4-x^2-6y^2))

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(\partial)/(\partial y)(sqrt(4-x^2-6y^2))

\frac{\partial}{\partial y} (4 - x^{2} - 6 y^{2})

- \frac{6 y}{4 - x ^{2} - 6 y ^{2}}

Solution steps

\frac{\partial}{\partial y} (4 - x^{2} - 6 y^{2})

Treat

x

as a constant

Apply the chain rule:

\frac{1}{2 4 - x ^{2} - 6 y ^{2}} \frac{\partial}{\partial y} (4 - x^{2} - 6 y^{2})

= \frac{1}{2 4 - x ^{2} - 6 y ^{2}} \frac{\partial}{\partial y} (4 - x^{2} - 6 y^{2})

\frac{\partial}{\partial y} (4 - x^{2} - 6 y^{2}) = - 12 y

= \frac{1}{2 4 - x ^{2} - 6 y ^{2}} (- 12 y)

Simplify

\frac{1}{2 4 - x ^{2} - 6 y ^{2}} (- 12 y) : - \frac{6 y}{4 - x ^{2} - 6 y ^{2}}

= - \frac{6 y}{4 - x ^{2} - 6 y ^{2}}

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What is (\partial)/(\partial y)(sqrt(4-x^2-6y^2)) ?
The answer to (\partial)/(\partial y)(sqrt(4-x^2-6y^2)) is -(6y)/(sqrt(4-x^2-6y^2))