Posted by **Anonymous** on Friday, August 3, 2007 at 10:07pm.

IF

f(x) = {(3,5), (2,4), (1,7)}

h(x)= {(3,2), (4,3), (1,6)}

determine each of the following:

(f+h)(1)=

how do I add f and h?

(f o h)(3)=

how would I multiply f and h?

f^-1(x)=

how would I find the inverse of f?

1/f(x)=

how would I do that?

f(1) = 7 and h(1) = 6

(f + h)(x) is by definition f(x) + h(x)

(f o h)(x) is by definition f(h(x))

h(3) = 2

and f(h(3)) = f(2) = 4

So (foh)(3) = 4

f^(-1)(f(x)) = x by definition.

f(x) = {(3,5), (2,4), (1,7)}

If you take, e.g., x = 3, then you see that

f^(-1)(5) = 3. So, you see that you just need to interchanbge the numbers:

f^(-1)(x) = {(5,3), (4,2), (7,1)}

## Answer This Question

## Related Questions

- math - kelly solved the following problem on her recent math test 121/11+4*8=120...
- math - Name: Barbara Dillon Date: July 18 2010 1. Divide 90÷18 =5 Answer is 5 2...
- Math - When you have 4xy^3 * 2x^2y * 5xy^2 Would you add the first number and ...
- math help - could some one please explain to me reciprocal how to find the ...
- Math - Multiply (1-5x³)² I am not sure If I add or multiply the exponents would ...
- Math - 8*2sq+7*(4+1)= ? Can someone explain to me what to after the parenthesis...
- algebra 2 - I am trying to factor the expression -8y^2+28y-60 but can't get an ...
- math-5 - Which choice is the answer? Show me please. Tara spent 3 hours doing ...
- Algebra - 89. Solve for x in the equation: 6/7x - 6 = -2 I posted this before, ...
- math-5 - Tara spent 3 hours doing homework. She spent 1/3 of her time on math, ...

More Related Questions