What is (\partial)/(\partial y)(sqrt(1+x^2+y^2)) ?

The answer to (\partial)/(\partial y)(sqrt(1+x^2+y^2)) is y/(sqrt(1+x^2+y^2))

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(\partial)/(\partial y)(sqrt(1+x^2+y^2))

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

\frac{y}{1 + x ^{2} + y ^{2}}

Solution steps

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

Treat

x

as a constant

Apply the chain rule:

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

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

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

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

Simplify

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

= \frac{y}{1 + x ^{2} + y ^{2}}

\int (3 x^{2} + 2) d x

\int_{0}^{1} 6 x^{2} (3 - 5 x^{3})^{3} d x

- \frac{1}{2} x^{2} - \frac{5}{2} x - 2, [- 2, 7]

\int \frac{1}{x I n x} d x

\frac{d}{d x} (x^{2} - 6 x + 11)

What is (\partial)/(\partial y)(sqrt(1+x^2+y^2)) ?
The answer to (\partial)/(\partial y)(sqrt(1+x^2+y^2)) is y/(sqrt(1+x^2+y^2))