Functions

Functions

1. Linear

   • Straight line

2. Quadratic

   • U or N-shaped

3. Cubic

4. Exponential

5. Logarithmic

6. Domain - Inputs

7. Range - List of outputs

8. Codomain - All possible outputs

9. Vertical Line test

   • Intersects curve once
     • Function!

10. Composite Function

    • One function inside another

11. Injective

    • One to one, not all B's have to be busy
    • Horizontal line: once only

12. Surjective

    • One to one or many to one, all B's have to be busy
    • Horizontal line test: at least once

13. Bijective

    • One to one and all B's are busy
      • Both injective and surjective
    • Horizontal: Once only

14. Inverse function

    • Domain of one = Range of other
    • Let y = f(x)
      • Write x in terms of y
      • Swap y and x