Re:Free (Creative Commons) Book on How To Do Proofs
by chalst on Monday February 28, 2011 @02:10AM
(#2270432)
Useful resource. It doesn't stress enough the value of direct proofs for intuition enough to my liking.
Example: in section 6.4, it is easy to prove that 6a^2-2a+7 is even iff a is odd, and the direct proof gives a better intuition that the proof by contradiction and contrapositive proofs described.
Example: in section 6.4, it is easy to prove that 6a^2-2a+7 is even iff a is odd, and the direct proof gives a better intuition that the proof by contradiction and contrapositive proofs described.