Typo/Error: Typo/Error:

[tbrauch]

Describe the error
Please give a location of the error, and a brief description of what is wrong or confusing.
At the end of the paragraph linked below, I think it should say:

For example, f(n)=3n+1 is a closed formula, since to find f(5) (say) we take the input 5 and do something to it: Multiply it by 5 3 and then add 1.

The "it" being referenced is the input of n=5, which is multiplied by 3.

What version of the book are you using?
Fall 2024

Link to paragraph?
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Paragraph
https://discrete.openmathbooks.org/dmoi4/sec_intro-structures.html#subsec_structures-functions-8