Indirect Proof
Indirect Proof
Indirect Proof:
Assume what you need to prove is false, and then show that something contradictory (absurd) happens.
Steps in an Indirect Proof:
Steps in an Indirect Proof:
- Assume that the opposite of what you are trying to prove is true.
- From this assumption, see what conclusions can be drawn. These conclusions must be based upon the assumption and the use of valid statements.
- Search for a conclusion that you know is false because it contradicts given or known information. Oftentimes you will be contradicting a piece of GIVEN information.
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