Integrals

U-Substitution

The integration counterpart to the chain rule.

U-substitution is a method for finding integrals. Using the Fundamental Theorem of Calculus, it corresponds to the chain rule for differentiation. It involves replacing a complex part of the integrand with a single variable 'u'.

Solve Examples with U-Substitution

integral of x cos x2 →integral of 2x x2 1 →

More Calculus Topics

Chain Rule
Learn how to use the chain rule to find the derivative of composite functions.
Power Rule
The most fundamental rule for derivatives: d/dx(x^n) = nx^(n-1).
Definition of Derivative
The formal limit definition that explains the concept of instantaneous rate of change.