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#1 2012-11-29 23:37:56
- Raabi
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Regula Falsi method Formulae
Hello Wizards
This time, I came up with another confusion on the subject. Just over-viewing the subject, I found two entirely different (apparently, at least) formulae for the method. One is:
x1 = [a * f(b) - b*f(a)] / [f(b) - f(a)]; where a and b are two guess points.
The other is:
x = [xn - x(n-1)] / [f((xn) - f(xn-1)] * f(xn)
Are these two formulae actually the same or different for their use in different situations. Please help keeping in mind that I am just a toddler in this branch of mathematics.
I hope and wish bobbym is somewhere around.
Thanks in anticipation.
Raabi
#2 2012-11-30 08:27:39
- bobbym
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Re: Regula Falsi method Formulae
Hi;
The first one I recognize as the false position method.
The second one is slightly off.
No matter how it is phrased it is not my favorite choice for obtaining roots.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#4 2012-11-30 17:35:22
- bobbym
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Re: Regula Falsi method Formulae
Hi;
There is also if I remember a slight difference between the secant method and regula falsi.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.