Sunday

January 25, 2015

January 25, 2015

Posted by **Shawn** on Sunday, November 30, 2008 at 9:39pm.

3.) f(x)= 2x-5 for this one I have

y= (x+5)/2 is this correct?

4.) g(x)= (x+5)^3

I am stuck on this one.

- Algebra inverse -
**Reiny**, Sunday, November 30, 2008 at 9:45pm3 is good

4:

let y = (x+5)^2

interchange x with y

x = (y+5)^2

+-sqrt(x) = y+5

y = -5 +-sqrt(x) or f(x) = -5 +-sqrt(x)

- Algebra inverse question -
**Shawn**, Sunday, November 30, 2008 at 9:51pmHi Reiny,

I just have one question for 4.) the problem is g(x)= (x+5)^3

how were you able to convert the equation to the following?

let y = (x+5)^2

interchange x with y

x = (y+5)^2

- Algebra inverse question -
**Reiny**, Monday, December 1, 2008 at 12:34ammy error, did not read the question carefully enough, thought it was squared instead of cubed.

so just change the sqrt to cube root and use only the positive sign.

so last line should be

y = -5 +-cuberoot(x)

- Algebra inverse question -

**Answer this Question**

**Related Questions**

Pre-Calc - Does y=1/x have an inverse? It is a one-to-one function, so it should...

Algebra 2 - formula for converting celcius to fahrenheit: F=9/5C+32 a) what is ...

Advanced Algebra - What is the inverse of each of the functions defined by the ...

Algebra Help Inverse One-to-one - I need to know if I have done this correctly. ...

math - The cost of producing q articles is given by the function C=f(q)=100+2q...

Algebra - what is the inverse of the linear parent function? How would you graph...

Algebra Help Inverse One-to-one - Did I do this right? Problem: If the ...

inverse - find f^-1 (x). (this is asking me to find the inverse) f(x) = -(x-2)^2...

Algebra - Myra uses an inverse variation function to model the data for the ...

algebra/trig - 1. f(x)=x^3+5 does f(x) have an inverse? if so, find the inverse ...