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**

Dismiss Notice

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!

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

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