The integral is an important concept in mathematics. Integration is one of the two main operations in calculus, with its inverse, differentiation (from differential calculus), being the other.

• Indefinite integral
• Anti-derivative
• Definite integral
• Area under a polynomial
• Area under a curve
• Integration by parts
• Integration by partial fractions
• Numerical integration
In particular, the integral of a function between two values gives the area under the graph of the function between those two limits.
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