Octave Tutorial #15: Solve Polynomial Equations using Octave/Matlab

[@mr.stemedutv5514]

Hope this tutorial video is useful for you who would like to learn Matlab and GNU Octave, and please let me know if you have any questions and comments!

[@udayan62]

Thanks very much.
I tried the problem you gave at the end:
>> roots([1 -5 5 5 -6])
ans =
3.0000
-1.0000
2.0000
1.0000
I also got complex roots (for x^2 + 1 = 0):
>> roots([1 0 1])
ans =
-0 + 1i
0 - 1i

[@sewind6613]

Wow. This is a fantastic way to check my homework. Thank you, sir. Great video.

[@chhayanktarkarietlucknow212]

very very helpful

[@jam-ss2jc]

Bro

[@jam-ss2jc]

Please help 🙏

[@jam-ss2jc]

Do you know how to solve non linear system of equations in octave?

[@jam-ss2jc]

Suppose there are two simultaneous quadratic equations and we want to calculate the values of it... Then how do we do this in octave?

[@chhayanktarkarietlucknow212]

Ye mene bahut phle pda tha ab to sb bhul gya bro

[@ayandamemela1278]

Thanks

[@jam-ss2jc]

Please help 🙏🙏
Suppose there are two simultaneous quadratic equations and we want to calculate the values of it... Then how do we do this in octave?

[@mr.stemedutv5514]

You can use "fsolve" function in Octave or Matlab. I can make the video for you shortly.

[@johnsmithsu310]

hello sir, what about x^100 -121 ? how to write it in octave? thanks alot

[@chemistry_vs7472]

I guess it will be roots([1 0 0 0 ... 0 0 0 -121]). Between 1 and -121 there should be 99 zeros.

[@mr.stemedutv5514]

Yes, it should be. To make 99 zeros, you can use "zeros(1,99)".

[@g1ntok147]

How to solve non linear equations in octave

[@mr.stemedutv5514]

Can you share the non-linear equations to solve?