Solve function returns Warning and empty matrix
2 views (last 30 days)
Show older comments
I run this code to solve for u and v
syms u v
S = solve([2*u + v == 0, u - v == 1], [u, v])
I get warning saying I have 4 equations and 2 unknowns and a warning that says it cannot find an explicit solution when there is a clear solution to the system. I have other codes that I try to use solve and get the same warnings.
Is there a toolbox I need to download or why can't I use solve?
1 Comment
Walter Roberson
on 16 Jun 2015
As an experiment try
S = solve([2*u + v, u - v - 1], [u, v])
If that works then you might be running an older version of MATLAB that does not handle "==" for symbolic variables.
Answers (1)
Eric Lin
on 17 Jun 2015
To add to Walter's answer, the "==" notation was introduced in R2012a: R2012a Release Notes - New Relational Operators Create Equations, Inequalities, and Relations
0 Comments
See Also
Categories
Find more on Logical in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!