Solve Linear Equations with MATLAB

MATLAB is used to solve a set of linear equations (Ax=b) by inverting the matrix A and multiplying by the b vector. Three ways to solve A*x=b are:
x = inv(A)*b % good
x = A\b % better
x = linsolve(A,b) % best

[edictsJP]

You just saved me 20 points on an exam LOL, god bless

[folgee]

Even 5 years later this was helpful for school, thank you good sir

[salimamansoura]

May God reward you for all your efforts and all the valuable information that you provide us smoothly .

[pa_u_los]

I have problems with right division. How could I solve:
1.5a - 2b + c + 3d = 7.5
3a + b - c + 4d = 16
2a + 6b - 3c - d = 78
5a + 2b + 4c - 2d = 71

I know how to solve it using left division but don't know how to solve it using right one. Very appreciated the tip for using linsolve()! My professor says to not focus on the best-built in function for optimization, but I don't see a problem to show this things to beginners like me. That way I can know better practices for the future. Anyways, that's my question.
Thanks and great video!

[TheHawfor]

god bless you, i was having trouble finding how to solve a matrix with variables

[samibasha]

Thank you for this wonderful and simple explanation

[Frank-cuur]

This video helps me a lot! Thank you so much!

[andrespulido]

You can just use \ instead of multiplying by -1. The syntax is x=A\b; it is a more robust tool

[peaceandlove-hb]

how do you solve when there is X1 X2 X3

[songshub]

hey can you tell me what might be code for a look up table in matlab

[robinsibiya]

Let's consider the last example shown in this video, is it possible to calculate the uncertainty (accuracy) of Z if we find its value. Please help!

[EventHrizn]

The mic-quality isnt on top, but otherwise: Great video!

[JosheyG]

How do you do this if your numbers are not integers

[bhushanpetkar]

Can we solve 4 equation using same method?

[ayoubhsaine]

hi i need to connect the code of every method with button in interface some one can help me please is my project pf my defense

[gaaldaniel]

Can you tell how to do this with parameters? (a*x + b*y style)
How do I tell matlab wich one is the variable and wich one is the constant?

[anindyaluthfiani]

can i have your email? I have lot of question about solve a matrix in matlab😔 i have to make a calculator of matrix for my final exam, please somebody help...

[faridmazouz]

est ce que vous pouver m'expliquer la methode de simplexe pour resoudre une equation linéaire

[hibakh]

I have a final exam in MATLAB on Saturday😥😥😥

[fffppp]

Is matlab able to do stochastic calculus using syms?