i need to prove that the following is not surjective. how do i do that?(adsbygoogle = window.adsbygoogle || []).push({});

let f:R->R be the function defined by f(x)=x^2 + 3x +4.

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

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

# I need to prove that the following is not surjective. how do i do

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