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假設
No Study = Fail
Study = No Fail
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No Study + Study = Fail + No Fail
(No + 1)x Study = (No + 1)x Fail
So.... Study = Fail 得証
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反證
No Study + Study = Fail + No Fail →移Fail到左式
No Study - Fail + Study = No Fail →(No Study - Fail = 0)
故 Study = No Fail
By 誠意
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No Study + Study = Fail + No Fail
No Study + Study = No (Study + Fail) →( Fail = No Study )
Study = No (Study + Fail - Study)
∴Study = No Fail
By 誠意
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