perplexus.info :: Just Math : Three numbers

Three numbers (Posted on 2003-11-17)

If x, y and z are real numbers such that: x + y + z = 5 and xy + yz + zx = 3, what is the largest value that x can have ?

No Solution Yet Submitted by Ravi Raja

Rating: 3.7500 (4 votes)

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re(4): another solution

| Comment 16 of 22 |

(In reply to re(3): another solution by SilverKnight)

Whoops. Not doing so good today. I was looking at a "3-D" graph and misjudged the maximum by eye.

Posted by Charlie on 2003-11-18 21:28:07

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