How to Use:
- “if” is a conditional statement: if A then B (where A and B are statements)
- “iff” is a biconditional statement: A iff B means: if A then B, AND if B then A (both statements are true)
- when given an “iff” problem you need to show both conditional statements are true (if A then B, if B then A)
Click here to view just the question for the example if and only if proof. If you would like to see the worked out solution to the if and only if proof problem, click here.