Saturday

April 18, 2015

April 18, 2015

Posted by **mary** on Monday, October 25, 2010 at 1:18pm.

f(x) = x2-x-1 and g(x) = 3/x

Find fog(x) also find the domain of f, g and fog

- calculus -
**Reiny**, Monday, October 25, 2010 at 3:09pmdomain of f : any real number

domain of g : any real number except x ≠ 0

fog

= f(g(x))

= f(3/x)

- (3/x)^2 - 3/x - 1

clearly the domain of fog is any real number, except x≠0

- calculus -
**Reiny**, Monday, October 25, 2010 at 3:10pmlast line in calculation should say

= (3/x)^2 - 3/x - 1

**Answer this Question**

**Related Questions**

math - Solve the two sided inequality and show the solution on real line 7 < ...

math - Solve the two sided inequality and show the solution on real line 7 <...

math - find the domain of the composite function fog. f(x)=x/x-2;g(x)=-8/x a. ...

college algebra - 1. answer the following for the given quadratic function f(x)=...

Composite Functions - f(x)=(7x+28)/(x-3) and g(x)=(3x+28)/(x-7) Find: (fog)(x) (...

Algebra - If f(x)= ln x, g(x) = e^3x, and h(x) = x^7, find the following... a) (...

pre-calculus - find the functions f and g so that Fog = H. H(x)=/2x+1\

college algebra - given f(x)=4x-5, g(x)= x+5 over 4 Find (fog)(x). are these ...

precalculus - Precalculus-------Give an example of three functions f,g,h none of...

calculus - when working with composite functions, does fog=gof? how do i create ...