- indefinite integral
- 부정적분
- primitive function
- 원시함수
xa의 적분
<math>a\neq -1</math>일 때
- <math>\displaystyle \int x^adx=\dfrac{1}{a+1}x^{a+1}+C</math>
<math>a=-1</math>일 때
- <math>\displaystyle \int x^{-1}dx=\displaystyle \int \dfrac{1}{x}dx=\log|x|+C</math>
성질
- <math>\displaystyle \int kf(x)dx=k \displaystyle \int f(x)dx</math>
- <math>\displaystyle \int \{f(x)+g(x)\}dx = \displaystyle \int f(x)dx + \displaystyle \int g(x)dx</math>
- <math>\displaystyle \int \{f(x)-g(x)\}dx = \displaystyle \int f(x)dx - \displaystyle \int g(x)dx</math>