SOLUTION: Hiiii so i have a problem on functions. i know how to graph regular functions, but when "f" is put in I AM LOST. like an example is f(x) = x2 + x - 12 i rlly am just completely lo

Algebra ->  Functions -> SOLUTION: Hiiii so i have a problem on functions. i know how to graph regular functions, but when "f" is put in I AM LOST. like an example is f(x) = x2 + x - 12 i rlly am just completely lo      Log On


   

Question 434922: Hiiii so i have a problem on functions. i know how to graph regular functions, but when "f" is put in I AM LOST. like an example is f(x) = x2 + x - 12
i rlly am just completely lost. i could use some major help please! thanks!!
Found 2 solutions by josmiceli, richard1234:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Any time you see f%28x%29, you can substitute a letter
like +y+ or z+.
Also, f(x) doesn't have to be f. You can simply
say +f%28x%29+=+g%28x%29+. Now you can use g.
If I say f%28x%29+=+x%5E3+, then what is the advantage
of saying it that way?
I have said that f(something) = (something)^3 and
now I can say +f%28x+%2B+1%29+=+%28x%2B+1%29%5E3+
Also, I can add functions of x, like
+f%28x%29+%2B+f%28x%2B1%29+=+x%5E3+%2B+%28x%2B1%29%5E3+

Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
The "f" simply denotes that it is a function in terms of x.