Question: Determine whether these are valid arguments. a) If x is a positive real number, then x is a positive real number. Therefore, if a

Determine whether these are valid arguments. a) If x is a positive real number, then x is a positive real number. Therefore, if a is positive, where a is a real number, then a is a positive real number. b) If x 0, where x is a real number, then x = 0. Let a be a real number with a 0; then a 0. conducting an

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