f(x)=x方-x,则f(2x+ 1)等于
问题描述:
f(x)=x方-x,则f(2x+ 1)等于
答
f(2x+ 1)
=(2x+1)^2-(2x+1)
=4x^2+2x
f(x)=x方-x,则f(2x+ 1)等于
f(2x+ 1)
=(2x+1)^2-(2x+1)
=4x^2+2x