- #1

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## Homework Statement

if z= f(x) + yg(x), what can you say about zyy explain?

## Homework Equations

## The Attempt at a Solution

z= f(x,yy)

zyy = d/dy (dz/dy) d(partial derivative)

- Thread starter tinkus
- Start date

- #1

- 13

- 0

if z= f(x) + yg(x), what can you say about zyy explain?

z= f(x,yy)

zyy = d/dy (dz/dy) d(partial derivative)

- #2

lanedance

Homework Helper

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try taking the partial derivative and see what you get

remember for partials, the other variable is kept constant during the differentiation, in this case x

- #3

- 655

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Also recall that d/dx (a(x,y)*b(x,y)) = (d/dx a(x,y))*b(x,y) + a(x,y)*(d/dx b(x,y)).

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