y=-2x²+2ax+1(-1≤x≤1) 求y的范围y=ax²-ax(-2≤x≤2) 求Y的范围y=-x²+2x-3(m≤x≤2),求y的取值范围,要分类讨论
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y=-2x²+2ax+1(-1≤x≤1) 求y的范围y=ax²-ax(-2≤x≤2) 求Y的范围y=-x²+2x-3(m≤x≤2),求y的取值范围,要分类讨论
y=-2x²+2ax+1(-1≤x≤1) 求y的范围
y=ax²-ax(-2≤x≤2) 求Y的范围
y=-x²+2x-3(m≤x≤2),求y的取值范围,要分类讨论
y=-2x²+2ax+1(-1≤x≤1) 求y的范围y=ax²-ax(-2≤x≤2) 求Y的范围y=-x²+2x-3(m≤x≤2),求y的取值范围,要分类讨论
y=-2x²+2ax+1(-1≤x≤1)
y=-2(x-a/2)²+a²/2+1
若a>0,-1-2a≤y≤a²/2+1,(-1≤x≤1) ;
若a=0,-1≤y≤1,(-1≤x≤1) ;
若a0,-a/4≤y≤6a,(-2≤x≤2);
若a=0,y=0,(-2≤x≤2);
若a0,-3≤y≤-2,(m≤x≤2);
若m=0,-3≤y≤-2,(m≤x≤2);
若m