Question Number 60623 by yeshuaisrael1000@gmail.com last updated on 20/Oct/19
$$\mathrm{W}{hat}\:{are}\:{all}\:{intregal}\:{methods}\:{that}\:{exist} \\ $$$${like}\:{trigonometry}\:{sub}.\:{Gaussian}\:{method}\:{feyman}\:{method}\:? \\ $$$$ \\ $$$$ \\ $$