clear; close all; clc;%% Parameters
f = exp(x);deltaX = 0.05;x = 2:deltaX:2.5;f = exp(x);n = length(x);y = zeros(n,1);y2 = zeros(n,1);y3 = zeros(n,1);y4 = zeros(n,1);y5 = zeros(n,1);y6 = zeros(n,1);%% finite difference formulas
for i = 1:n-1 %forward difference - first and second derivative
y(i) = (f(i+1)- f(i))/deltaX; y2(i) = (f(i+2) - 2*f(i+1) + f(i))/(deltaX.^2); end for i = 2:n %backward difference - first and second derivative
y3(i) = (f(i)- f(i-1))/deltaX; y4(i) = (f(i) -- 2*f(i-1) + f(i-2))/(deltaX.^2);end for i = 2:n-1 %central difference - first and second derivative
y5(i) = (f(i+1)- f(i-1))/(2*deltaX); y6(i) = (f(i+1) - 2*f(i) + f(i-1))/(deltaX.^2); end
MATLAB: Index exceeds the number of array elements at y2 for the finite difference formulas
exceeds the number of array elementsy2(i) is getting and index error
Best Answer