Find

StartFraction partial derivative f Over partial derivative x EndFraction

and

StartFraction partial derivative f Over partial derivative y EndFraction.

$$f$($x$,$y$)$equalsStartRoot $4$ x squared plus $5$ y squared EndRoot

Question content area bottom

Part $1$

StartFraction partial derivative f Over partial derivative x EndFractionequalsenter your response here

$($Type an exact$$ answer, using radicals as$$ needed.$)$

Part $2$

StartFraction partial derivative f Over partial derivative y EndFractionequalsenter your response here

$($Type an exact$$ answer, using radicals as$$ needed.$)$