If f(x)=3x+2 and g(x)=Xto the second power-x.. find each value
1.f(4)
2.f(8)
3.f(-2)
4.g(2)
anyone know how to do any of it?
2006-10-22 12:26:35 · 6 answers · asked by Anonymous in Education & Reference ➔ Homework Help
1. You substitute 4 for x in f(x)
Since F(x)=3x+2
then f(4)= (3*4)+2=14.
There, now you do the rest.
2006-10-22 12:36:24 · answer #1 · answered by Wil T 3 · 0⤊ 0⤋
Example: F(4) reads 'f of 4.' It means to replace the variable in function 'f' with a 4, then evaluate the expression. So, f(4) would be 3(4)+2 or 14. Now you should be able to do the rest.
2006-10-22 20:24:17 · answer #2 · answered by tlf 3 · 0⤊ 0⤋
when you have something in function notation, which is what the problems are in, you substitute the number in parenthesis for the X and find the answer. remember that f(X) is one value and is said f of X. DO NOT try and find the answer by thinking that f is all by itself multiplied by X that is very wrong.
1.f(X)=3X+2 so f(4)=(3 x 4)+2 solve from there.
f(4)=(12)+2
f(4)=14
2006-10-22 19:42:09 · answer #3 · answered by sg 3 · 0⤊ 0⤋
Thats so easy:
just put the value of the quz in the Equation
1. F(4)......the value is 4 and the eq. is for f which is F(x)= 3x + 2
put 4 instead of each X in eq that will be F(4) = 3 * 4 + 2 = 12 + 2 = 14.
the rest you can do it like i did above......i helped in one and you must practice for the rest
2006-10-22 19:39:41 · answer #4 · answered by ZaiD T 2 · 0⤊ 0⤋
Substitute the numeric value in the parenthesis for x in the equation.
2006-10-22 20:32:59 · answer #5 · answered by Caffeinated 4 · 0⤊ 0⤋
nope sorry!
2006-10-22 19:35:57 · answer #6 · answered by Anonymous · 0⤊ 0⤋