求导法则

满足线性性质和乘法性质

1. $$[u(x)\pm v(x)]=u^{\prime }(x)\pm v^{\prime }(x)$$
2. $$[u(x)\cdot v(x){]}^{\prime }=u^{\prime }(x)v(x)+u(x)v^{\prime }(x)$$
3. $$[\frac{u(x)}{v(x)}{]}^{\prime }=\frac{u^{\prime }(x)\cdot v(x)-u(x)v^{\prime }(x)}{v^2(x)}$$