find (f+g)(x), (f-g)(x),(f/g)(x), f(g(x)) and g(f(x))

This is a math help site not a homework site.
Where are you having trouble? What have you tried?

I will give you the definitions but you really should look them up in your textbook.

(f+g)(x) = f(x) + g(x)
(f-g)(x) = f(x) - g(x)
(fg)(x) = f(x)g(x)
(f/g)(x) = f(x)/g(x)
f(g(x)) and g(f(x)) are already defined.
Try to work these out, show us your work and then you'll get expert help.
 
Jomo said:
This is a math help site not a homework site.
Where are you having trouble? What have you tried?

I will give you the definitions but you really should look them up in your textbook.

(f+g)(x) = f(x) + g(x)
(f-g)(x) = f(x) - g(x)
(fg)(x) = f(x)g(x)
(f/g)(x) = f(x)/g(x)
f(g(x)) and g(f(x)) are already defined.
Try to work these out, show us your work and then you'll get expert help.
Click to expand...
1602141120065.pngI tried to do it but i really don't understand the steps or anything
 
To find (f+g)(x) just add f(x) and g(x). f(x) is not f(x)*x

If f(x) = 2x+4 and g(x) = 1/x, then (f+g)(x) = f(x) + g(x) = 2x+4 + 1/x
(f - g)(x) = f(x) - g(x) = 2x+4 - 1/x

(fg)(x) =f(x)*g(x) = (2x-4)*(1/x)
 
You must log in or register to reply here.
Top