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417exercise1.6 Alyssa P Hacker's new-if

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  • vincent.lau
    Nov 15, 2007
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      about Alyssa P Hacker's new-if,i thought new-if just like original if
      in scheme at first,but when i try to run the new-if version sqrt via
      (print (sqrt 2)), there is nothing put out(i thought will be 1.4142),i
      can't figure out what happed? who can explain it?
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