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→Solving Definite Integrals: added links and gave examples for when approximations are used
Solving a definite integral usually has two main steps: [[integration]] and [[subtraction]].
Solving a definite integral usually has two main steps: [[integration]] and [[subtraction]].
Sometimes approximations, such as the [[Riemann Integral]] or [[Simpson's rule]] are used. These approximations are used when:
*The exact answer is not needed, only a close approximation. (Common in [[Engineering]])
*The rule for integration is very complex. (Such as <math>\int e^{x^2}\,dx</math>)
*The rule for integration is simply unknown. (Such as <math>\int \zeta(x)\,dx</math>, the [[Zeta function]])
== Example 1==
== Example 1==