f(x)=x^2-2tx+1f'(x)=2x-2t在x=t处有拐点,当x＞t时,f'(x)＞0,f(x)单调递增；当x≤t时,f'(x)≤0,f(x)单调递减；1.当t＞1时,f(x)在-1≤x≤1＜t内单调递减,在x=-1处有最大值,f(-1)=1+2t+1=2t+2;2.当0≤t≤1时,f(x)在0≤...