f(x)=(x+1)²+2若允许x取任意实数,则f(x)在x=-1时取得最小值2而题设f(x)在[t,0]上取得最小值-2,所以t≤-1通过计算知f(-2)=(-1)²+2=3因f(x)在(-∞,-1)单调减少,故当tf(-2)=3,与题设“f(x)在[t,0]上取得最大...