Tuesday

September 30, 2014

September 30, 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

**Answer this Question**

**Related Questions**

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

precalculus - verify the functions are inverses of each other by showing that f(...

college algebra - Graph the following function using transformations. Be sure ...

college algebra - Question 638522: Graph the following function using ...

college algebra - Find the inverse of the following function. Find the domain, ...

algebra - Verify that the functions f and g are inverses of each other by ...

Precalculus - Verify that the functions f and g, are inverses of each other by ...

pre calculus - verify functions f and g are inverses of each other by showing ...

algebra - Find the inverse of the following function. Find the domain, range, ...

College Algebra - 1.Answer the following for the given quadratic function. f(x...