[問題][教學][邏輯][數學]離散數學~~~~

[問題][教學][邏輯][數學]離散數學~~~~

~蘋果~ 於 星期三 十月 17, 2007 11:23 pm


  1. Show pÙ(qÚr) « (pÙq) Ú (pÙr) is a tautology.
  2. Let P(x,y) be the statement “x + y = x - y”, what are true value of "y "x P(x,y) and "x "y P(x,y), where the domain consists of all real numbers?
  3. Let P(x,y) be the statement “xy = y”, what are true value of $y "x P(x,y) and "x $y P(x,y), where the domain consists of all real numbers?
  4. Let P(x,y) be the statement “x2 + y2 = 5”, what are true value of $y $x P(x,y) and $x $y P(x,y), where the domain consists of all real numbers?
  5. Exercises 2, on page 72 of the discreet mathematics book

 

這是我在書上看到的題目~~~

拿出來考考親愛的大家~~~

因為我剛學沒多久~

看的懂的人可能會覺得很簡單吧~~

感覺書上寫的好複雜押~~

希望各位高手給個指點~~


~蘋果~
訪客
 




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