Question

求老师指导,设函数设函数f(x-1)=t²-2x+2,则函数f(x)=?,

Answer 1

f(x)=t^2-2x因为令X=x-1,则x=X+1,f（x-1)=f(X)=t^2-2(X+1)+2=t^2-2X,