Root Finding - Bisection Method | Numerical Methods (Tagalog) 🇵🇭

[@alexisacosta4234]

Sir, salamat po. Heto yung tamang kapartner ng modules na ibinibigay sa OL classes. God Bless po.

[@reysielouano4343]

SALAMAT sir ❤ talagang makukuha mo ang step by step procedure.

[@noeldelrosario369]

Thanks for the Lecture. Well Explained. It is really good I am refreshing myself with Numerical Metod. I am also trying to put it into a program using Python V3+. I remember doing it in BASIC when I was a student. In case someone out there might be interested... Cheers. ## module bisect ''' root = bisect(f,x1,x2,switch=0,tol=1.0e-9). Finds a root of f(x) = 0 by bisection. The root must be bracketed in (x1,x2). Setting switch = 1 returns root = None if f(x) increases as a result of a bisection. ''' from math import log, ceil, exp import error def bisect(fy,x1,x2,switch=0,epsilon=1.0e-9): f1 = fy(x1) if f1 == 0.0: return x1 f2 = fy(x2) if f2 == 0.0: return x2 if f1*f2 > 0.0: error.err('Root is not bracketed') n = ceil(log(abs(x2 - x1)/epsilon)/log(2.0)) for i in range(n): x3 = 0.5*(x1 + x2); f3 = fy(x3) if (switch == 1) and (abs(f3) >abs(f1)) \ and (abs(f3) > abs(f2)): return None if f3 == 0.0: return x3 if f2*f3 < 0.0: x1 = x3; f1 = f3 else: x2 = x3; f2 = f3 return (x1 + x2)/2.0 # Function is fy = exp(-x) - x def fy(x): return(exp(-x) - x) # MAIN # Optional Test Initial Brackets [0,1] print('f(0) = ',fy(0)) print('f(1) = ',fy(1)) # Invoke Bisect Method for f(y) = exp(-x) - x x1 = 0; x2 = 1 root = bisect(fy,x1,x2,switch=0,epsilon=1.0e-9) print('root = ', root)

[@engrleir]

Nice touch on setting the maximum number of iterations (n) relative to the desired error (epsilon). Thanks!

[@fritzconcel4161]

boss ito yung literal na inaaral namin ngayon, at nung una di ko talaga masagutan kasi sa unang tingin di ko magets. sobrang helpful ng video na to! godbless sir!

[@chellyandrieb.lincod4007]

Laking tulong sir!! Hoping to see more lecture videos from you! Godbless

[@joelcagay2024]

Very nice explanation. Thank you Engr.

[@fawlen_eynjuhl]

Thank you sir naiintindihan ko pong maliwanag❤

[@tanglaorenzjordanm.9379]

Sobrang goods ng explanation ayos na aos grabe thankyou so much po sir, Na gets ko agad lesson namen sa numerical God bless po sir. More lesson to come po

[@alcaidejurep.9871]

nice dan hahaha

[@tanglaorenzjordanm.9379]

@@alcaidejurep.9871 hahahahahahaha namo

[@jaybheart9767]

Hi naman dyan sa may quiz mamaya

[@nishimiyashouko5777]

Sir more examples po. And additional information about Approximate Relative Errors(pahapyaw Lang po Kasi saamin ito) inlined with this method po.

[@marquezjordanl.835]

Thank you po! Ang linaw nung explanation!

[@notpiccaboo142]

Thank you sir! Hoping na more examples pa!

[@siaaa69]

Very helpful! Salamat!

[@engineermarjbustamante17]

Thank you for this vid engr. mas naenlighten ako sa topic namin. More power and God bless 😇.

[@engrleir]

You’re welcome! 😁

[@tyfrixandri8406]

well explained! sana mag karoon ka pa ng madaming subscriber! salute

[@engrleir]

Thank you!

[@shainaordona8699]

More numerical methods and analysis sir ty😊

[@engrleir]

Sure 👍. Will upload soon 😁

[@charlesenricosalinas71]

Galing po ng explanation boss.

[@iamsolly525]

Thank you po, sir.

[@annabellesanico8219]

Thanks for a well explained topic sir.

[@sondereclaans4511]

Syempre subscribe ako, dami ko natutunan ehh

[@allenmaedeleon4761]

Thanks for the videos! Very helpful and easy to understand :) Do you have Muller's Method? Thank you

[@francisdavesiacor8565]

go @Allen Mae!

[@AxiePlays601]

Salamat po idol. Kelan po malalaman kung kailan magsstop ng iteration?

[@nicasiy]

Make a course about Numerical Methods (differentiation/integration, curve fitting, Least square approximation, Ordinary Differential Equations, Interpolation) please!!

[@engrleir]

Hello thanks for watching. Yes, I’m making it right now. Sana matapos this week.

[@asanuddinmariellegayem6840]

Good day, sir! How to know po the correct value of your x? Sa example niyo po, you already said agad na ang root ay 0.5671. Salamat po.

[@sondereclaans4511]

Parang precise na siguro ung nakuhang root na 0.5625 or approximate sa 0.5671

[@lesterjanito1478]

Nice po. Salamat❤️

[@patriciaglifonea2953]

more numerical methods topic sir, thanks

[@aljae.intheoceans]

waw this has made easy!

[@tuboroalliat.7237]

This really helped sir! Hope to see more videos of you!

[@joshuacabidoy9531]

kudos galing magturo ;)

[@engrleir]

Thank you po!

[@angelineromanbautista8402]

subscribe ako dito, it really helped HAHAHA thanks po btw

[@arjhondelantarmarquez3066]

Sana meron example kayo sa opene method

[@mukbangislife1784]

more on numerical methods aand analysis sir 🥺

[@engrleir]

Hello. Thanks for watching! I will make more this month. 😄

[@jovanmagtoto1682]

Very well said sir. Wala po ba itong excel? :)

[@dansinn]

Good explanation, better you make it full english

[@dexterabila1985]

Can we use this po ba to find the roots of 7th degree polynomials?

[@lorettacruz3087]

Paano kapag hindi given yung value na m? Pano ko malalaman na magsstop nako sa pag itterate?

[@mananquilpauldaviss.6994]

👏👏👏

[@engrleir]

🙏🙏🙏 thanks for watching!

[@salazarkevinjan2419]

Done

[@jonesratilla1682]

paano kinuha yong -0.632 sa f(xright)??

[@ernestogaddi8021]

sensei arigato gozaimasu

[@jeromesalvador8984]

Good pm boss, ano pong app ginagamit nyo sa pagturo? Wala akong mahanap po kaseng magandanng app, need ko rin turuan mga kaklase ko po. Salamat

[@edgardoconcepcion8308]

sir, paano ung cal tech n2 s casio fx 911 es plus?

[@engrleir]

Hello thanks for watching. Pasensya na po, di ako familiar sa caltech ng bisection method. Usually pag root finding kasi tapos calculator, ung solve function ng calcu ang ginagamit (parang newton raphson)

[@navarrocarljericcabigon7787]

WHAT BOOK DO YOU USE PO?

[@tutstorial8474]

wala po tong for excel? gaya nung ibang methods sir?😅

[@gondraneosjhetroarabit9807]

Sir paturo po pag sa excel, nakaka lito po kase pag gagawa ng statement sa 2nd iteration sa guess a at guess b

[@engrleir]

Hello. Thanks for watching. Meron po ako video using excel para sa root finding. Eto po kzbin.info/www/bejne/iaHQf5qPe9JmkMU

[@gondraneosjhetroarabit9807]

@@engrleir thank you po sir, God bless po

[@beysik6871]

sir pwede po mag request ng problems which can be solve using any numerical methods

[@merlundreyzamora1324]

Sir. May excel po ba neto? Bisection*

[@teodhcreed1444]

Buti pa to naiintidihan ko yung sa prof namin parang ewan

[@alfredod.antipasado95]

Magbilat