SOLUTION: Find f(2) when f(x) = {{{3x^2}}} How do i solve this? What i did was just substitute the 2 into the 3x^2 so it came out as 3 times 2^2. That gave me 12as a final answer. is this

Algebra ->  Expressions-with-variables -> SOLUTION: Find f(2) when f(x) = {{{3x^2}}} How do i solve this? What i did was just substitute the 2 into the 3x^2 so it came out as 3 times 2^2. That gave me 12as a final answer. is this       Log On


   



Question 316573: Find f(2) when f(x) = 3x%5E2
How do i solve this? What i did was just substitute the 2 into the 3x^2 so it came out as
3 times 2^2. That gave me 12as a final answer. is this correct?

Found 2 solutions by texttutoring, solver91311:
Answer by texttutoring(324) About Me  (Show Source):
You can put this solution on YOUR website!
Yes, that is correct.

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Absolutely 100% spot on correct.

Here's how to remember this: Forget the fact that you were taught that is the name of a function. In point of fact, is the name of the function whereas is the value of the function named when the independent variable has the value . That should make it easy to remember that is the value of the function named when the value of the independent (or input) variable is .

Super-Dooper Double Plus Extra Credit

Let be a function defined by . Find expressed in simplest terms

John