▽ Nabla
  • 🎯 Bounty --:--:--
  • ▽ Classic
    • ✺ Daily Problem
    • All Problems

    • Leaderboard
  • ▽ Arena [BETA]
    • Arena Hub
    • Find Match

    • Global Rankings
  • News
  • About Us
Log in Sign up
  • Show All

  • Level 1 Easy
  • Level 2
  • Level 3
  • Level 4
  • Level 5 Hard
Active Archive
All Topics Algebra Calculus Number Theory Combinatorics Applied Math
Calculus
★★★★★

Arc Length of a Catenary

Determine the exact arc length of the catenary curve $y = \cosh(x)$ spanning from …

+160 XP
Login
Applied Math
★★★★★

Brachistochrone Time

A bead slides frictionlessly under gravity $g$ down a cycloid curve defined parametrically by …

+160 XP
Login
Number Theory
★★★★★

Complex Cosine

Solve: $$\cos(x) = i$$ Format: [fraction] - i ln([term])

+160 XP
Login
Calculus
★★★★★

Complex Residue

Find the residue of $f(z) = \frac{e^z}{(z-1)^2}$ at its pole $z=1$.

+160 XP
Login
Number Theory
★★★★★

Complex Sine Solution

Calculate the principal value for: $$\sin(x) = 2$$ Format: X/Y - i*Z

+160 XP
Login
Combinatorics
★★★★★

Dyck Path Scheduling

A scheduler processes jobs on a 4x4 grid from $(0,0)$ to $(4,4)$. To maintain …

+160 XP
Login
Combinatorics
★★★★★

Expectation of Slope

Find the expectation value of the slope between 2 random points strictly uniformly distributed …

+160 XP
Login
Calculus
★★★★★

Feynman's Trick

Evaluate the definite integral analytically: $$\int_0^1 \frac{x^2 - 1}{\ln(x)} dx$$ Format: ln(X)

+160 XP
Login
Number Theory
★★★★★

Legendre's Formula

Calculate the exact number of trailing zeros in the decimal representation of $100!$ (100 …

+160 XP
Login
Applied Math
★★★★★

Navier-Stokes Poiseuille Flow

In a fully developed, steady laminar pipe flow (Hagen-Poiseuille), the radial velocity profile is …

+160 XP
Login
Combinatorics
★★★★★

Random Triangle in Sinc Lobe

What is the expected area of a triangle whose three vertices are uniformly sampled …

+160 XP
Login
Number Theory
★★★★★

The Basel Problem

Evaluate the exact sum of the infinite series: $$\sum_{n=1}^{\infty} \frac{1}{n^2}$$ Format: pi^2/X

+160 XP
Login
Algebra
★★★★★

The Functional Equation

Determine the explicit function $f(x)$ that satisfies the relation $f(x) + 2f\left(\frac{1}{x}\right) = 3x$ …

+160 XP
Login
Algebra
★★★★★

The Spectral Radius

Determine the strictly largest eigenvalue $\lambda$ of the symmetric matrix $M = \begin{pmatrix} 2 …

+160 XP
Login
Combinatorics
★★★★★

Total Packet Misrouting

A router dispatches 5 distinct data packets to 5 distinct MAC addresses. Due to …

+160 XP
Login
Calculus
★★★★★

Transcendental Maclaurin Expansion

Find the exact rational coefficient of the $x^4$ term in the Maclaurin series expansion …

+160 XP
Login
Number Theory
★★★★★

Wilson's Theorem

Determine the least non-negative residue of $16! \pmod{17}$.

+160 XP
Login