Integral of sqrt[ 1 - 2 sin 2x + 3 (cos x)^2 ] from 0 to pi/2

How to complete square under square roots How to solve definite integral with absolute value. How to finde sin ( arctan 2 ). Thanks for your watching.

Видео Integral of sqrt[ 1 - 2 sin 2x + 3 (cos x)^2 ] from 0 to pi/2 автора Теория векторов: Путешествие через пространство