How do u write function notation and what variable does function notation replace

Question

Mathematics

Humphrey

24 November, 17:12

How do u write function notation and what variable does function notation replace

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Answers (1)

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Rylee Evans · Answer 1

If f (x) = 2x+1; Prove f (3+1) = f (3) + f (1)

Proof: 2 (3+1) + 1 = 2 (3) + 1 + 2 (1)

6+2+1 = 6+1+2

9 = 9

Therefore: f (3+1) = f (3) + f (1)

this is NOT the answer just a question i got on my test its a example