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Finding Value of Functions

Using the following table:

Attachment 24405

For each of the following functions, if they are defined at the given point, find their value.

Otherwise explain why they are undefined.

1. 2f(x) + g(x) when x=3

*if i substitute the x then itll be 2f(3)+g(3)=2f(30)+g(40)*..*what is the next step?*

2. 3f(2)-2g(0)

*sub again 3f(10)-2g(-20)*

3. (1/2)f(g(5))

*=(1/2)f(g(5)) how do i proceed from this step?* c*ould this possibly be undefined?*

4. g(x-3)/f(x+6) when x=3

*=g(3-3)/f(3+6) = if i cancel the 3 then if im corrent it would be -3/6?*

Re: Finding Value of Functions

So read off your table the values of f and g at those values of x...

Re: Finding Value of Functions

Quote:

Originally Posted by

**Prove It** So read off your table the values of f and g at those values of x...

so for the 1st one f(x) = 30 and g(x)=40

what is the '2' representing? 2xf? so 2(f(x))=60?

Re: Finding Value of Functions