查看“︁微积分学/定积分”︁的源代码

==近似值==
<math>
\Delta x=\frac{b-a}n
</math>
===中點法則===
<math>
\Delta x\,f\left(x_i\right)
</math>
===梯形法則===
<math>
\frac{\Delta x}2\left(f\left(x_0\right)+2f\left(x_1\right)+...+2f\left(x_{n-1}\right)+f\left(x_n\right)\right)
</math>
===辛普森法則===
<math>
\frac{\Delta x}3\left(f\left(x_0\right)+4f\left(x_1\right)+2f\left(x_2\right)...+2f\left(x_{n-2}\right)+4f\left(x_{n-1}\right)+f\left(x_n\right)\right)
</math>