Solve Linear Equations with Python

[snow]

Awesome stuff! Thank you very much. I had one of those for an assignment and solved it by hand in like 10 seconds, but I had no Idea how to do it with the proper syntax with NumPy. Thanks a lot!

[lululin]

Thank you so much! It really solved my problem. I have a small question for the answer array [6, 1, 1], it is a 3 rows one column, why it is not [[6], [1], [1]]?

[Misseldine]

What screen capturing software did you use to make this video?

[festeration]

please, if we have 3 equations, and we know that for exemple z=0, how can we force him to solve the problem with z=0 thx <3

[rvilleg]

how does that b matrix works. When we introduce the arguments for the array using the np.array([ ]) the inner [ ] works as a column? but when we are introducing the coefficients using np.array([ [ ], [ ] ]) each inner [ ] works as a row but the outer as...a column as well? Or does Python knows how to handle that when we use the linalg.solve command?

[kennyPAGC]

I don't understand why b = np.array([-42, 2]) instead of np.array([[-42], [2]]). Basically I'm asking why is b a 1x2 vector rather than a 2x1 one?

[basticorrea]

which way is efficienly better, this method or using Gauss-Jordan or LU?

[nsbkpzs]

Sir why we got dot with numbers in the answer in numpy? Hope for getting the answer.

[irreproachableincorrigable]

Hi,
you are supposed to use inverse of A which is obtained by 'np.linalg.inv(A)' . But rather that this, u directly multiplied A and b to find z with the method 'np.linalg.solve(A, b)'

[kennyPAGC]

is there a video where I can see the actual implementation of the equation solver?

[Alex-svli]

can you help when the input and has to be given in a input.txt file and output printed to output.txt file?

[azeemmustafa]

I got an error as
NameError Traceback (most recent call last)
in <module>
----> 1 A = np.array

NameError: name 'np' is not defined
Please tell why I get this error.

[weiminli]

Why it complains that raise LinAlgError("Singular matrix")

[usmanfawad]

What if the linear system has infinitely many solutions?

[Tmac]

i have a problem, but it kept saying "LinAlgerror: 1-dimensional array give. Array must be atleast two-dimensional". please help me fix this

[mccaffeina]

Hello, how can I find all roots of 2 equations in Python without using modules. I am using Python 3.5.1 and modules doesnt work in my python. Thank

[anot]

hi how l input from the user
Ask the user to input nxn numbers separated by comma. This will be the z matrix.
Enter matrix z: 6, 3, 9, -2, 3, 8, -1, -4, 5

[ibrogamingman]

Hi can you make a video on how to make a full-fledged math solving app

[truclam]

How can I solve 5 equations but only 4 unknowns?

[esti]

Awesome!
Why don't you write b as a column? I see you wrote b as a row