求导:y=(1/2)^x+x^3 求详细过程我算了多遍都和答案上不对`答案说是“3x^2-ln2*(1/2)^x

问题描述:

求导:y=(1/2)^x+x^3 求详细过程我算了多遍都和答案上不对`答案说是“3x^2-ln2*(1/2)^x

y"=ln1/2*(1/2)^x+3x^2=3x^2-ln2*(1/2)^x
ln1/2=ln2^(-1)=-ln2