L9_A
Indirect proofs
Prove by contraposition
Prove by contradiction
L9_B
Indirect proof
Prove by contradiction
Array ( [0] => Array ( [title] => L9A [link] => https://www.youtube.com/embed/ViW9MWZ-epA ) [1] => Array ( [title] => L9B [link] => https://www.youtube.com/embed/rOXz3_HEXzs ) )
Title
第1節
第2節
Syllabus
L9_A
Indirect proofs
Prove by contraposition
Prove by contradiction