anonymous
  • anonymous
Topic: MATLAB 101 Can someone help me with MATLAB ? I have 0.05% idea how this thing works. I'm just following instructions from the internet, but I'm still stuck with the problem below. Please anyone, teach me.
Computer Science
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
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anonymous
  • anonymous
I already done with letter a. I used inline function on this question. I have no idea how to do letter b. Can anyone help me out?
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mathmate
  • mathmate
What have you learned so far? Quadratic formula, Newton's method, fixed point iteration, Newton's for systems, or all of the above?
anonymous
  • anonymous
only quadratic formula i think :/ never heard of the other ones..

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mathmate
  • mathmate
Is this a course on Matlab only, or it's a course on numerical methods/analysis using Matlab as a tool?
anonymous
  • anonymous
only matlab only
anonymous
  • anonymous
we are only focusing on the commands and stuff
mathmate
  • mathmate
Ok, then there's no expected method to solve the second. For starters, here's an implicit plot of the system (second problem). http://prntscr.com/8o3mfh
mathmate
  • mathmate
See if you can reproduce the same plot in Matlab (if you have covered graphics).
mathmate
  • mathmate
The solution near (2,3) is the top right intersection.
anonymous
  • anonymous
we are on the equations right now.. and i got 2.4072 and 1.1106
anonymous
  • anonymous
if i'll use [2,3]
mathmate
  • mathmate
So you're in a class? I think you should pay attention to what the instructor is showing you instead!
anonymous
  • anonymous
no i have a vacant right now. This assignment is due on wednesday
mathmate
  • mathmate
(2.4,1.1) is definitely not the solution!
anonymous
  • anonymous
so my code is wrong >.<
mathmate
  • mathmate
Have you examined the graph and be convinced that (2.4, 1.1) is not the answer?
mathmate
  • mathmate
You can find out if you put your solution into the equations and see if f(x,y)=0, and g(x,y)=0.
mathmate
  • mathmate
Your solution works for g(x,y)=0 only. f(x,y) gives -36.0
mathmate
  • mathmate
So what method of solution of polynomial equations have you learned so far?
mathmate
  • mathmate
Not sure if you have included both equations into the 'eqns' parameter of fsolve. That may be your only problem.
anonymous
  • anonymous
oh yeah i made x= x(1) and y=x(2)
mathmate
  • mathmate
You have missed out the 0 at the end of definition of F(1), which makes the constant 4 instead of 40. That's why when substituted you will get -36! I think that's all you have to correct!
anonymous
  • anonymous
oh so now i get 2.696 and 3.3655 ?
mathmate
  • mathmate
I get 2.6963 and 3.3655 using just display(x).
anonymous
  • anonymous
yes! so those are right?
mathmate
  • mathmate
Absolutely. If you need more digits, use a more elaborate version of print.
anonymous
  • anonymous
ahh okay. thank you so much! finally, i can move on with the other exercise xD
mathmate
  • mathmate
Good! You're welcome! :)

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