- $\rhd$ Introduction to trigonometric substitution (8:53) Find $\displaystyle\dfrac{1}{\sqrt{4-x^2}}dx$.
- $\rhd$ Substitution with x=sin(theta) (5:07) Find $\displaystyle\dfrac{\pi}{\sqrt{8-2x^2}}dx$.
- $\rhd$ Trigonometric substitution (8:10) Find $\displaystyle\dfrac{1}{\sqrt{36+x^2}}dx$.
- $\rhd$ Trigonometric substitution with a summary (12:50) Find $\displaystyle\dfrac{x^3}{\sqrt{x^2+9}}dx$.
