Recent content by theakdad

I was just wondering how do you guess the first root... In my example there is a simple polynomial...but what to do when you have harder cases?

Yes,its obvious... So i get $$(x-1) (x-2) (x-2)$$ i have three roots: X1 = 1 and X2,3 = 2

+I have to find the roots of the polynomial...so have to factorize it...

I do not understand the part "By sight"...

$$x^3 -5x^2+8x-4$$ What is the simplest way to factorize given equation? Thank you.

I would love to learn more about those two matrices. What do they tell us,how to calculate them? Maybe in R Studio? I was searching for some good explanations on google,but i didnt find them. And another question,i apologize if is not in right forum... How do i know how much dispersion can i...

Thank you! I really hope it is correct! ;) I haven't noticed similar examples on the internet,do you maybe know where i could find them?

I have to express $X$ in given matrix equation: $$C^TA-XB=B^{-1}-X$$ I have done this,and i don't know if i have done it good: $$C^TA-B^{-1}=XB-X$$ $$C^TA-B^{-1}=X(B-I)$$ $$(C^TA-B^{-1})(B-I)^{-1}=X$$ Thank you for the help and answers!

So i think the answer is: Deal with it as you can?

My question was about rational roots...how to find them fast. (Mmm)

Seems that's not the easier and faster method as Horners...or i can't see it! :D

I will try it,but i can't see that this method can be shorter...again you have to test it it with Horners method. Or can you show me how to do it with my example?

I don't know how to do it...

I have given polynomial: $$x^3-8x^2+19x-12$$ I know how to find the roots with Horners method,i am just wondering if there is an easier and quicker way to find them? Thank you!

Thank you all for the help! I have studied those kind of problems,so now i know how to do it!