Practice

Solve problems

Problems unlock one after another, from simple all the way to genius. Every one you solve adds XP.

  • 1,198 problems
  • 9 difficulty levels
  • +5 to +405 XP per problem
Sign in and start See the first problem

Sign in to solve and collect XP. Your progress is saved.

All problems

Showing 913–960 of 1,198

  • 7.15Calculus

    Locked

    A product of a sine and a cosine

    Difficulty 7 of 9+245 XP

  • 7.16Algebra

    Locked

    A system of three linear equations

    Difficulty 7 of 9+245 XP

  • 7.17Calculus

    Locked

    The n-th root of a sum

    Difficulty 7 of 9+245 XP

  • 7.18Calculus

    Locked

    The point from the mean value theorem

    Difficulty 7 of 9+245 XP

  • 7.19Calculus

    Locked

    Powers of sine and cosine

    Difficulty 7 of 9+245 XP

  • 7.20Calculus

    Locked

    A separable equation

    Difficulty 7 of 9+245 XP

  • 7.21Calculus

    Locked

    Joining a logarithm to a parabola continuously

    Difficulty 7 of 9+245 XP

  • 7.22Calculus

    Locked

    A power with a variable exponent

    Difficulty 7 of 9+245 XP

  • 7.23Calculus

    Locked

    Rotating a parabolic arch

    Difficulty 7 of 9+245 XP

  • 7.24Calculus

    Locked

    A radius of convergence with factorials

    Difficulty 7 of 9+245 XP

  • 7.25Calculus

    Locked

    A limit at minus infinity

    Difficulty 7 of 9+245 XP

  • 7.26Calculus

    Locked

    A normal line and a triangle at the axes

    Difficulty 7 of 9+245 XP

  • 7.27Calculus

    Locked

    A logarithm over a square root

    Difficulty 7 of 9+245 XP

  • 7.28Calculus

    Locked

    A series with a product of neighbours

    Difficulty 7 of 9+245 XP

  • 7.29Calculus

    Locked

    One-sided limits at zero

    Difficulty 7 of 9+245 XP

  • 7.30Calculus

    Locked

    Where a tangent meets the cubic again

    Difficulty 7 of 9+245 XP

  • 7.31Calculus

    Locked

    An improper integral with e^(−x²)

    Difficulty 7 of 9+245 XP

  • 7.32Algebra

    Locked

    One entry of an inverse matrix

    Difficulty 7 of 9+245 XP

  • 7.33Calculus

    Locked

    The oblique asymptote of a rational function

    Difficulty 7 of 9+245 XP

  • 7.34Calculus

    Locked

    Where the function decreases

    Difficulty 7 of 9+245 XP

  • 7.35Calculus

    Locked

    A power 3/2 in the denominator

    Difficulty 7 of 9+245 XP

  • 7.36Algebra

    Locked

    The largest eigenvalue

    Difficulty 7 of 9+245 XP

  • 7.37Calculus

    Locked

    Tangent minus sine

    Difficulty 7 of 9+245 XP

  • 7.38Calculus

    Locked

    Inflection points of a logarithmic function

    Difficulty 7 of 9+245 XP

  • 7.39Calculus

    Locked

    A square times a cosine

    Difficulty 7 of 9+245 XP

  • 7.40Calculus

    Locked

    A linear first-order equation

    Difficulty 7 of 9+245 XP

  • 7.41Calculus

    Locked

    A cosine raised to a large power

    Difficulty 7 of 9+245 XP

  • 7.42Calculus

    Locked

    The spread of values on an interval

    Difficulty 7 of 9+245 XP

  • 7.43Calculus

    Locked

    An improper rational function

    Difficulty 7 of 9+245 XP

  • 7.44Calculus

    Locked

    A homogeneous second-order equation

    Difficulty 7 of 9+245 XP

  • 7.45Calculus

    Locked

    Discontinuities of the first kind

    Difficulty 7 of 9+245 XP

  • 7.46Calculus

    Locked

    A shadow under a street lamp

    Difficulty 7 of 9+245 XP

  • 7.47Calculus

    Locked

    A recurrence for integrals with eˣ

    Difficulty 7 of 9+245 XP

  • 7.48Calculus

    Locked

    A Maclaurin coefficient of a product

    Difficulty 7 of 9+245 XP

  • 7.49Calculus

    Locked

    A recursive sequence with two candidates

    Difficulty 7 of 9+245 XP

  • 7.50Calculus

    Locked

    An approximate cube root

    Difficulty 7 of 9+245 XP

  • 7.51Calculus

    Locked

    The exponent where the series still converges

    Difficulty 7 of 9+245 XP

  • 7.52Calculus

    Locked

    A limit hiding a derivative

    Difficulty 7 of 9+245 XP

  • 7.53Calculus

    Locked

    The tenth derivative at zero

    Difficulty 7 of 9+245 XP

  • 7.54Calculus

    Locked

    A quotient of cube roots

    Difficulty 7 of 9+245 XP

  • 7.55Calculus

    Locked

    A series where a logarithm appears

    Difficulty 7 of 9+245 XP

  • 7.56Calculus

    Locked

    A difference of two reciprocal squares

    Difficulty 7 of 9+245 XP

  • 7.57Calculus

    Locked

    Parameters for a prescribed extremum

    Difficulty 7 of 9+245 XP

  • 7.58Calculus

    Locked

    An integral with the root of 1 − x²

    Difficulty 7 of 9+245 XP

  • 7.59Algebra

    Locked

    A system with infinitely many solutions

    Difficulty 7 of 9+245 XP

  • 7.60Calculus

    Locked

    Three formulas and two parameters

    Difficulty 7 of 9+245 XP

  • 7.61Calculus

    Locked

    An exponential and a parabola

    Difficulty 7 of 9+245 XP

  • 7.62Calculus

    Locked

    Partial fractions with a quadratic factor

    Difficulty 7 of 9+245 XP