Show that u + v + w = 6

An Equation For Weierstrass Substitution

A limit that looks like e

A Diophantine Equation @drpkmath1234

A factorial problem from the American Invitational

Cramer's rule vs Gauss-Jordan Elimination

Derivative of The Factorial Function

Negative half factorial

Half factorial using the gamma function

Pi Function (Euler Factorial Function)

Deriving the Gamma Function

Finding the range of an integral

0! = 1! = 1

Solve for x in the floor function equation

Limit of multivariable function

Mixing Problem

Find k, if the set of vectors is linearly dependent

Cube Root of Unity

Equation of a curve through (1,3) with slope y/x^2

Limit at infinity with unknown constants

integrate(6/(9x^2 +1)^2) dx

An algebra problem from Finland

limit (5^x+4^x)^1/x as x goes to inf

A Functional Equation from Taiwan's International Mathematics Olympiad Training.

Gabriel's Horn and the Painter's Paradox

Solving a septic equation

An interesting Functional equation

Prove that y divides x^2

(8^t + 27^t)/(12^t + 18^t) = 7/6

(f o f)(x) = x + 1