In the handout
- Handout: Solve a System with Inverses
I showed you how to find the inverse of a coefficient matrix. I also showed how to used it to solve the system
5x + 7y + 12z = 134,000
2x + 3y + 5z = 56,000
x + y + z = 14,000
In this post, I want to show you how to solve this system using WolframAlpha.
Start by writing the coefficient and constant matrices for this system,
We can solve the system by computing .
Using WolframAlpha, we can find the inverse of A: