The first page of 2020, tackling two closely related integrals.

The Final Installment of Nico's Logarithmic Integral Series.

The integral featured in "Intense Integral" evaluated for complex inputs.

Evaluating a general form of the integral from "The Funky Logarithm"

Trigonometric functions are periodic, that is until you multiply by x. This makes it much harder to integrate over large intervals.

A Halloween Special! The sum from n=1 to infinity of sin(an)/n with contour integral and residues!

An integral that is solved Ramanujan's Master Theorem, and contour integration. The integral from 0 to infinity of sin(x^n) dx.

The general Gaussian integral evaluated using the Residue Theorem.

How to derive the formula for the volume of a n dimensional spher, or n-ball

proving the integral representation for the zeta function.