设f(x)=x^2+11x+7,则f(x+1)=
问题描述:
设f(x)=x^2+11x+7,则f(x+1)=
答
f(x)=x^2+11x+7
f(x+1)=(x+1)^2+11(x+1)+7 = x^2+13x+19