705 of 1,000 players

Curve Sprint is unlocked. 295 more to head-to-head Battles.

Vincent0705

[7]Natural🇺🇸

1,188 / 4,000 XP into level 7. Playing since September 2026.

Levels: #10
Sprint: #7
Curve Sprint: #2
Diverge: #13

League

Secant

2 promotions · 3 weeks played

Vincent0705 Squiggles

435

Area Under the Curve · 10/36 collected

Power Tower

Pi-Rat

Quotient Koala

Little Sine

9day streak, best of 11.

Badges

16 of 58

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Stats

Problems solved: 480
Time played: 4h 50m

The rest is kept private.

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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)