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Answer 1 · 2017-12-07T13:35:37

Undefined

When we see an $F(x)$ we know this is a function. Now what a function?

A function is simply an equation that has an input and a related output.

Lets say for a second that $F(x) = x^2$
This is saying that if I put in some number $(x)$ I will get out a new number, $F(x)$

I would also like to point out that $F(x)$ is the same as writing $y$ . The only difference is that $F(x)$ is used exclusively for functions.

Ok, lets go back to the equation $F(x) = x^2$
Lets try to find $F(2)$ of that equation

Well, to do this we just plug in $2$ for the $x$ in the equation!
$F(x) = 2^2$
$F(x) = 4$

Thats all there is to it!
Lets try doing $F(4)$ this time.
$F(x) = 4^2$
$F(x) = 16$

Although functions can get much more difficult, that is the general idea of a function! Hope this helps!
~Chandler Dowd