![]() m file and write the top four lines of code in it to call and the function or call it from the command window of MATLAB. m file with the same name as the function name like mynewton.m and then create another. Note that if the above code shows an error, save the function mynewton() in a separate. We can use the subs() function to update the values in the loop and store the root value in the root array.įor example, let’s define a function and use a random function and find its first five roots using the above formula in MATLAB. We also must store all the root values inside an array to easily access the previous root value.Īfter that, we need to use a loop to find the roots, and we will update the values using the array of roots. We will store the given function in a variable, take its derivative using the diff() function, and store it inside a variable. For example, if we need to find four roots, we repeat the loop four times. ![]() ![]() We need to use a loop to get the root using the above formula. To find the derivative of a function, we can use the diff() function of MATLAB. The formula uses the previous value, function and its derivative to find the next root for the given function. ![]() The formula used to find the roots with the Newton-Raphson method is below. The method uses a formula to approximate a continuous function with a tangent line to find an approximation for the roots of a given function. We use the Newton-Raphson method to find the roots of a function. ![]()
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