06.08.2013 Views

Web skærmformat. - Aarhus Universitet

Web skærmformat. - Aarhus Universitet

Web skærmformat. - Aarhus Universitet

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

I. Differentiation – 2. Partielle afledede 45<br />

∂2f (x,y) = fyy(x,y)<br />

∂y2 ∂2f (x,y) = fyx(x,y)<br />

∂x∂y<br />

∂2f (x,y) = fxy(x,y)<br />

∂y∂x<br />

2.19. Mere afledning ☞ [S] 11.3 Partial derivatives<br />

Eksempel 1, 6<br />

Afledede og højere afledede<br />

f = x 3 + x 2 y 3 − 2y 2<br />

fx = 3x 2 + 2xy 3 , fy = 3x 2 y 2 − 4y<br />

fxx = 6x + 2y 3 , fyy = 6x 2 y − 4<br />

fxy = 6xy 2 , fyx = 6xy 2<br />

2.20. Endnu en afledning ☞ [S] 11.3 Partial derivatives

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!