Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 31m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
3. Functions
Function Composition
Multiple Choice
Multiple ChoiceGiven the functions f(x)=x2−21 and g(x)=x+2 find (f∘g)(x) and (g∘f)(x).
A
(f∘g)(x)=x1 ; (g∘f)(x)=x2−22x2−3
B
(f∘g)(x)=x1 ; (g∘f)(x)=x2−23
C
(f∘g)(x)=x ; (g∘f)(x)=x2−2
D
(f∘g)(x)=x ; (g∘f)(x)=x+2−21
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