Regula falsi - Wikipedia
https://en.wikipedia.org/wiki/Regula_falsiIn mathematics, the regula falsi, method of false position, or false position method is a very old method for solving an equation with one unknown; this method, in modified form, is still in use. In simple terms, the method is the trial and error technique of using test ("false") values for the variable and then adjusting the test value according to the outcome. This is sometimes also referred to as "guess and check". Versions of the method predate the advent of algebraand the u…
Method of False Position - Mathematics Stack Exchange
math.stackexchange.com › method-of-false-positionNow, given just these two points, suppose f is like a straight line through these two points. Where (i.e. for what x) would f ( x) = 0? (The x you find this way, by pretending f is a straight line inside the interval, is the false position .) Evaluate f ( x) for this x (using the correct f again now). You now have a smaller interval (either [ 1.3, x] or [ x, 2] -- whichever one contains a sign change for f) which you know contains the solution to f ( x) = 0.
The Method of False Position: Old and New – The Math Doctors
www.themathdoctors.org › the-method-of-falseSep 12, 2018 · Simple False Position (Regula falsi) This method goes back to the ancient Egyptians or Babylonians; the name comes from the fact that we start by supposing (positing) a solution (though we know it is false), and using the information obtained to get a new answer — which, for some (linear) problems, will in fact be the exact answer, but for others (non-linear) will just be a better approximation. In the latter form, it is similar to the Bisection Method I discussed last time, but rather ...