It means the value of the function equals zero when the argument is 4. For example: f(x)=x-4 f(4)=4-4=0
True
Only if it's a function.
yes, it is.
no
exactly...
It is 1.2164
y = x This is a line and a function. Function values are y values.
It means the value of the function equals zero when the argument is 4. For example: f(x)=x-4 f(4)=4-4=0
If you plug in y for the x function, and it equals the answer you got, it is right.
True
Only if it's a function.
yes, it is.
no
Yes.
f(f(x)) = f(x). Only if f is 1-1 then we have a solution f(x)=x.
All of them