Exam-style question
Try this first
For the composition g ○ f, which function is applied first?.
- A.g
- B.f
- C.Both functions are applied at the same time
- D.Neither function is applied
Model answer
What a good answer should say
- f
Explanation
Why this works
The notation g ○ f means that f is applied first and g is then applied to the result returned by f.
Common mistake
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