This video is about the solution of the Regula Falsi Method to find the root of the non-linear equation. The tutorial consists of:

  1. Theory of Regula Falsi Method
  2. Solution of Regula Falsi Method in Excel
  3. Solution of Regula Falsi Method in VBA

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Final expression to get the guess value can be written as:

Steps for a solution using the Regula Falsi method can be summarized as:

  1. Find points a and b such that  a < b and f(a) x f(b) < 0.
  2. Take the interval [a, b] and determine the next value of x1.
  3. If f(x1) = 0 then x1 is an exact root, else if f(x1) x f(b) < 0 then let a = x1, else if f(a) x f(x1) < 0 then let b = x1.
  4. Repeat steps 2 & 3 until f(xi) = 0 within specified accuracy.

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