导数

1. 一般求导法则

$$ \frac{\mathrm{d}a f(x)}{\mathrm{d} x} = a \frac{\mathrm{d} f(x)}{\mathrm{d} x} $$

2. 指数、对数函数的导

$$ \frac{\mathrm{d} e^x}{\mathrm{d} x} = e^x $$ $$ \frac{\mathrm{d} a^x}{\mathrm{d} x} = a^x \ln a $$