# Solving matrices in form of (A + Bx = C)?

5 次查看（过去 30 天）
Keith Grey2020-6-15
% How do I write to solve for y?
A = [1 2; 3 4];
B = [0 0; 1 1];
y = [x1; x2];
C = [1; 0];
% y should be a 2x1, but I'm getting a 2x2.
##### 2 个评论显示隐藏 1更早的评论
Exactly I second Ameer’s comment.

### 采纳的回答

Shivang Srivastava 2020-6-19
As per my understanding of your code, in the equation A + Bx = C:
Matrix A is of size 2 * 2
Matrix B is of size 2 * 2
Matric C is of size 2 * 1
So when you are trying to perform the operations because of size mismatch of A, C & B*y your answer is evaluated to be a 2*2 matrix.
You can check the following code snippet for a better understanding of this:
A = [1 2; 3 4];
B = [0 0; 1 1];
C = [1; 0];
y = (C - A)\B
If you still face any difficulty you can refer to the following documentations:

### 类别

Find more on Operating on Diagonal Matrices in Help Center and File Exchange

R2020a

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by