(x^m)'=mx^(m- 1)
(a^x)'=a^x*lna
(e^x)'=e^x
[log(a,x)]'= 1/(xlna)
(lnx)'= 1/x
(sinx)'=cosx
(cosx)'=sinx
[f(x)+g(x)]'=f'(x)+g'(x)
[C*f(x)]'=C*f'(x)
[f(x)* g(x)]' = f '(x)g(x)+f(x)* g '(x)
[f(x)/g(x)]=[f '(x)g(x)-f(x)g '(x)]/g? (10)