MacFormat 1994 August/August CD.bin/Shareware/Education/numericalmethods Folder/chap_4/zemx2d2.m

Text File | 1994-06-05 | 880 b | 52 lines | [MATF/MATL]

function [fun,dfun,ifun,x0,m,C,Ax] = zemx2d2
% Taylor series coefficient lists for several functions.
% Pm(x) = c(1) + c(2)x + c(2)x^2 + ... + c(m+1)x^m
% fun  is the function, output.
% dfun is the derivative, output.
% ifun is the integral, output.
% x0 is the point of expansion, output.
% m  is the degree of the polynomial, output.
% C  is the coefficient list, output.
% Ax contains three asis vectors plotting, output.
x0 = 0;
m = 24;
a = -3;
b = 3;
ymin = -0.1;
ymax = 1.05;
ymin1 = -10;
ymax1 = 10;
ymin2 = -1.5;
ymax2 = 1.5;
Ax(1,:) = [a b ymin ymax];
Ax(2,:) = [a b ymin1 ymax1];
Ax(3,:) = [a b ymin2 ymax2];
fun = 'exp(-x.^2/2)';
dfun = '-x./exp(-x.^2/2)';
ifun = 'sqrt(pi/2).*erf(x./sqrt(2))';
C = [1/1961990553600,
0,
-1/81749606400,
0,
1/3715891200,
0,
-1/185794560,
0,
1/10321920,
0,
-1/645120,
0,
1/46080,
0,
-1/3840,
0,
1/384,
0,
-1/48,
0,
1/8,
0,
-1/2,
0,
1];