A nice integral that uses the Wallis product.

An improper integral identity.

A nice integral.

Researchers thought this was a bug (Borwein integrals)

Factoring Quadratics WITHOUT Guessing Product & Sum

Harvard University Admission Interview Tricks

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How To Calculate Any Square Root

A nice integral.

What does the second derivative actually do in math and physics?

Kepler’s Impossible Equation

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How to do two (or more) integrals with just one

Why 4d geometry makes me sad

Kaprekar's Constant

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A viewer suggested integral.

A nice inverse tangent integral.

What Lies Between a Function and Its Derivative? | Fractional Calculus

A challenging equation for all precalculus students!