送交者: Nixrreg 于 2006-5-26, 21:58:46:

回答: 首先需要做的不是证明 由 wasguru 于 2006-5-26, 20:23:33:

How do you measure string to find whether it is a parabolic curve?

• 抛物线的开口高度正比于开口宽度的平方。 - wasguru (0 bytes) 2006-5-27, 01:09:22
• you just need a regular ruler, measure the X's and Y's - whoami (0 bytes) 2006-5-26, 22:26:01
  • How many X's and Y's do you need to measure? - Nixrreg (0 bytes) 2006-5-27, 00:13:14
    • N=2 - whoami (17 bytes) 2006-5-27, 00:38:05
      • Gee, the system ate my "greater than" sign - whoami (0 bytes) 2006-5-27, 00:40:08
        • So you meant N=>2? - Nixrreg (0 bytes) 2006-5-27, 00:43:07
          • That's what I meant - whoami (0 bytes) 2006-5-27, 00:44:39
            • Then how do you verify its not a parabolic curve? - Nixrreg (0 bytes) 2006-5-27, 00:57:57
              • GURU sai: "抛物线的开口高度正比于开口宽度的平方。" - whoami (0 bytes) 2006-5-27, 12:16:21

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