For i = 1 To n - 1 x = a + i * h sum = sum + Evaluate(Replace(f, "x", x)) Next i
Function TrapezoidalRule(f As String, a As Double, b As Double, n As Integer) As Double ' Adapted from standard numerical methods VBA textbooks Dim h As Double, sum As Double, i As Integer Dim x As Double h = (b - a) / n sum = (Evaluate(Replace(f, "x", a)) + Evaluate(Replace(f, "x", b))) / 2 numerical methods with vba programming books pdf file
Start with a reputable PDF (even an older edition), open the VBA editor (Alt+F11), and code the bisection method today. Within weeks, you will see numerical analysis not as abstract math, but as a reliable, executable craft—right there in the grid you already know. For i = 1 To n - 1