实数xy满足 x-y+10 则y比X的取值范围为
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实数xy满足x-y+10则y比X的取值范围为实数xy满足x-y+10则y比X的取值范围为实数xy满足x-y+10则y比X的取值范围为x-y+1≤0,则y≥x+1,两边比上x(x>0)得,y/x≥1+1
实数xy满足 x-y+10 则y比X的取值范围为
实数xy满足 x-y+10 则y比X的取值范围为
实数xy满足 x-y+10 则y比X的取值范围为
x-y+1≤0,则y≥x+1,两边比上x(x>0)得,y/x≥1+1/x,
x取值范围是所有正数,所以y/x取值范围是1到∞.
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