- Integration by substitution involves substituting a new variable for the variable of integration.
- This is useful when the integrand contains a function that can be simplified by substitution.
- The technique involves choosing a new variable, computing its derivative, and substituting into the integral.
- The resulting integral is often simpler to solve.
Important Formulas to Remember in these topic
$$\int f(g(x))g'(x)dx = \int f(u)du$$