(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

[tex]y=(x+1)^3[/tex]

2. Relevant equations

f(a)=f(b)

a=b

3. The attempt at a solution

[tex](a+1)^3 =(b+1)^3[/tex]

[tex]1+3 a+3a^2+a^3=1+3b+3b^2+b^3[/tex]

This is where I get stuck.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Prove this equation is one to one

**Physics Forums | Science Articles, Homework Help, Discussion**