Question

Can anyone explain notational functions for me? Thanks

Answer 1

sure. usually written as
\[f(x)=\text{expression}\] like
\[f(x)=x^2-x\]

Answer 2

the variable used is irrelevant because the function

\[f(x)=x^2-x\]
\[f(z)=z^2-z\]
\[f(\phi)=\phi^2-\phi\] all say the same thing. square and subtract

Answer 3

if you have a specific question best to ask. maybe with a specific function.

Answer 4

Took me a bit, but I understand now. Thank you!

Answer 5

yw