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

Consider the map L from the space of 2x2-matrices to R given by:

L([a b]) = a+ d

([c d])

For clarity, thats L(2x2 matrix) = a + d

3. The attempt at a solution

Im confused how any function of a matrix could possibly equal addition of two scalars, and thus have no idea where to begin.

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

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

# Homework Help: Linear map w/ matrix

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