lollipop

[0]Natural🇩🇪

750 / 4,000 XP into level 0. Playing since October 2026.

League

Epsilon

lollipop Squiggles

Area Under the Curve · 0/36 collected

No Squiggles yet.

1day streak, best of 1.

Badges

0 of 58

None yet. Everyone starts here.

The rest is kept private.

A picture, ready for a story or a post. No link needed.

Today's problem

\frac{d}{d x} [- 4 x - \frac{5}{x ^{2}}]

The hard one · double XP

For f (x, y) = 4 x^{2} + 2 x y^{2} - 11 y^{2}, find f_{xx} f_{y y} - (f_{x y})^{2} at (0, 2)