What is the derivative of ln(7x^2+9y^2) ?

The derivative of ln(7x^2+9y^2) is (14x+18y\frac{dy)/(dx)}{7x^2+9y^2}

What is the first derivative of ln(7x^2+9y^2) ?

The first derivative of ln(7x^2+9y^2) is (14x+18y\frac{dy)/(dx)}{7x^2+9y^2}

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\frac{d}{d x} (ln (7 x^{2} + 9 y^{2}))

\frac{14 x + 18 y \frac{d y}{d x}}{7 x ^{2} + 9 y ^{2}}

Solution steps

\frac{d}{d x} (ln (7 x^{2} + 9 y^{2}))

Apply the chain rule:

\frac{1}{7 x ^{2} + 9 y ^{2}} \frac{d}{d x} (7 x^{2} + 9 y^{2})

= \frac{1}{7 x ^{2} + 9 y ^{2}} \frac{d}{d x} (7 x^{2} + 9 y^{2})

\frac{d}{d x} (7 x^{2} + 9 y^{2}) = 14 x + 18 y \frac{d y}{d x}

= \frac{1}{7 x ^{2} + 9 y ^{2}} (14 x + 18 y \frac{d y}{d x})

Simplify

\frac{1}{7 x ^{2} + 9 y ^{2}} (14 x + 18 y \frac{d y}{d x}) : \frac{14 x + 18 y \frac{d y}{d x}}{7 x ^{2} + 9 y ^{2}}

= \frac{14 x + 18 y \frac{d y}{d x}}{7 x ^{2} + 9 y ^{2}}

d er i v a t i v e f (x) = 3 x^{2} - 24 x + 45

l a pl a ce t r an s f or m 1 + 5 e^{3 t}

d er i v a t i v e (8 x - x^{2})^{3}

e^{x} d x = 2 y d y

\frac{d}{d y} (x + 3 y^{\frac{1}{3}})

What is the derivative of ln(7x^2+9y^2) ?
The derivative of ln(7x^2+9y^2) is (14x+18y\frac{dy)/(dx)}{7x^2+9y^2}
What is the first derivative of ln(7x^2+9y^2) ?
The first derivative of ln(7x^2+9y^2) is (14x+18y\frac{dy)/(dx)}{7x^2+9y^2}