问题描述: 求二次函数f(x)=x*x-2mx+1在区间[-1,1]上的最大值和最小值. 1个回答 分类:数学 2014-10-19 问题解答: 我来补答 f(x) = x^2-2mx+1 = (x-m)^2 - m^2 + 1开口向上,对称轴x = m当m≤-1时,区间在对称轴右侧单调增最小值f(-1) = 1+2m+1 = 2m+2最大值f(1) = 1-2m+1 = -2m+2当m≥1时,区间在对称轴左侧单调减最大值f(-1) = 1+2m+1 = 2m+2最小值f(1) = 1-2m+1 = -2m+2当-1<m≤0时,最大值f(1) = 1-2m+1 = -2m+2最小值 = 极值 = - m^2 + 1当0≤m<1时,最大值f(-1) = 1+2m+1 = 2m+2最小值 = 极值 = - m^2 + 1 展开全文阅读