Pre-Calc functions question???

Question

if the directions give u 3 functions and tells u to evaluate (f - g)(0) what do u do with the zero?? does it replace x in the equations?

Answer 1

(f-g)(0) is like (f-g)(x) or (f(x)-g(x)) where x=0

Answer 2

That's a way to distinguish two different situations:

1. f(0)-g(0), the difference between two values.

and

2. (f-g)(0), the composite function, f-g, evaluated at x=0.

They are not necessarily the same.

Answer 3

First off, the definition of (f - g)(x) is f(x) - g(x).
Therefore, (f - g)(0) is f(0) - g(0).
What you would do is solve for f(0), solve for g(0), and subtract. Remember to put brackets around your solution for g(0) since, for subtraction, the omissions of brackets can lead to the incorrect answer.

Answer 4

the easy rule of algebra is substitute, substitute, substitute. Then circulate issues around. project 9 would be expressed as f(x)=g(x)=x^2+2x+a million=3x+3. placed like words jointly - circulate the variables to the left of the equivalent signs and warning signs and the constants to the main suitable. this could then grow to be x^2+2x-3x=3-a million and then sparkling up for x. verify your artwork by making use of plugging in the fee to the unique purposes. you're lacking the function for f(x) in project 12. project 36 additionally looks to miss information or have been incorrectly reported as this area ", (x^a million)/(x>a million)" would not make experience.

Answer 5

Yes

Anabel