Choose the main technique to prove the following statement:
For integers m and n , if both mn and m+n are even, then m and n are both even.

Question

Choose the main technique to prove the following statement: 
 For integers   m  and   n , if both   mn  and   m+n  are even, then   m  and   n  are both even.

Answer

T5: Proof by cases to show    \displaystyle \left(\left(\bigvee_{i=1}^n p_i ight) 	o q ight) \equiv T

Answer

T6: Constructive proof to show   \exists x P(x) \equiv T

Answer

T7: Two-step proof to show   \exists ! x P(x) \equiv T

Answer

T1: Direct proof to show   (p 	o q) \equiv T

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Choose the main technique to prove the following statement: For integers m ...

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