Sunday

April 20, 2014

April 20, 2014

Posted by **Jo** on Wednesday, January 18, 2012 at 3:02am.

f(x)=-7/x-4

g(x)=4x-7/x

- College Algebra -
**Steve**, Wednesday, January 18, 2012 at 5:12amI'll do f(g(x)) and that will show you how to do g(f(x))

f(x) = -7/(x-4)

so,

f(g) = -7/(g-4)

but, g = (4x-7)/x, so we have

f(g) = -7/[(4x-7)/x - 4]

= -7/(4 - 7/x - 4)

= -7/(-7/x)

= -7 * (x/-7)

= x

**Related Questions**

College Algebra - Verify the function f and g, are inverses of each other by ...

Algebra - I have to find the inverse function of f(x)=3-4x. I got y=3-x/4 for ...

College Algebra - verify that the functions of f and g are inverse of each other...

College Algebra - verify the identity. cotx secx sinx=1

College Algebra - Find the inverse of the function below. Graph the function ...

College Algebra - Let g(x) = -2x2 + bx + c be a quadratic function, defined ...

college Algebra - Let g(x) = -2x2 + bx + c be a quadratic function, defined ...

Precalculus - Suppose daily operating profit, in dollars, for a movie theater ...

College algebra - Given the following quadratic equation find. a) the vertex b) ...

college algebra - Given the following quadratic equation, find;? a. the vertex ...