(1)ln e = 1
(2)ln e^x = x
(4)e^(ln x) = x
(5)de^x/dx = e^x
(7)∫e^x dx = e^x + c
(8)∫xe^xdx = xe^x - e^x + c
(9)e^x = 1+x+x^2/2!+x^3/3!+x^4/4!+....
e指数方程怎么解求高手给解答
(1)ln e = 1
(2)ln e^x = x
(4)e^(ln x) = x
(5)de^x/dx = e^x
(7)∫e^x dx = e^x + c
(8)∫xe^xdx = xe^x - e^x + c
(9)e^x = 1+x+x^2/2!+x^3/3!+x^4/4!+....
方法一:
指数式换成对数式即可
如a^x=b化成对数式为x=loga b
方法二:
两边取对数
如a^x=b
两边取a为底的对数可得
loga (a^x)=loga b
即x=loga b