Below is matlab code:
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
close all,
clear all,
clc,
n = 5;
t = [2, 6, 10, 14, 18, 22];
Vr = [9.75, 6.60, 4.54, 2.85, 2.15, 1.46];
F = zeros(n+1, n+1);
F(:, 1) = Vr;
for i=1:n
for j=1:i
F(i+1,j+1) = (F(i+1,j)-F(i,j)) / (t(i+1)-t(i-j+1));
end
end
a = diag(F);
InterPolatedX = 2:0.05:22;
InterPolatedY = a(n+1)*ones(size(InterPolatedX));
for i=n:(-1):1
InterPolatedY = a(i) + InterPolatedY.*(InterPolatedX-t(i));
end
ProjectPath = pwd;
FilePath=strcat(ProjectPath,'\Results.txt');
fpt = fopen(FilePath,'wt');
for r=1:length(InterPolatedY)
fprintf(fpt,'%d\t%.2f\t%.2f\n',r,InterPolatedX(r),InterPolatedY(r));
end
fclose(fpt);
winopen(FilePath);
subplot(2,1,1); plot(t,Vr); title('Original data Plot - T Vs Vr');
xlabel(' --- T --->'); ylabel(' --- Vr --->');
subplot(2,1,2); plot(InterPolatedX,InterPolatedY);
title('Interpolated data Plot - T Vs Vr'); xlabel(' --- T
--->'); ylabel(' --- Vr --->');
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
S.No.
T Interpolated Vr
1 2.00 9.75
2 2.05 9.69
3 2.10 9.63
4 2.15 9.57
5 2.20 9.51
6 2.25 9.46
7 2.30 9.40
8 2.35 9.35
9 2.40 9.29
10 2.45 9.24
11 2.50 9.18
12 2.55 9.13
13 2.60 9.08
14 2.65 9.03
15 2.70 8.98
16 2.75 8.93
17 2.80 8.88
18 2.85 8.83
19 2.90 8.78
20 2.95 8.73
21 3.00 8.69
22 3.05 8.64
23 3.10 8.60
24 3.15 8.55
25 3.20 8.51
26 3.25 8.46
27 3.30 8.42
28 3.35 8.38
29 3.40 8.33
30 3.45 8.29
31 3.50 8.25
32 3.55 8.21
33 3.60 8.17
34 3.65 8.13
35 3.70 8.09
36 3.75 8.05
37 3.80 8.01
38 3.85 7.97
39 3.90 7.94
40 3.95 7.90
41 4.00 7.86
42 4.05 7.82
43 4.10 7.79
44 4.15 7.75
45 4.20 7.72
46 4.25 7.68
47 4.30 7.65
48 4.35 7.61
49 4.40 7.58
50 4.45 7.54
51 4.50 7.51
52 4.55 7.48
53 4.60 7.44
54 4.65 7.41
55 4.70 7.38
56 4.75 7.34
57 4.80 7.31
58 4.85 7.28
59 4.90 7.25
60 4.95 7.22
61 5.00 7.19
62 5.05 7.15
63 5.10 7.12
64 5.15 7.09
65 5.20 7.06
66 5.25 7.03
67 5.30 7.00
68 5.35 6.97
69 5.40 6.94
70 5.45 6.91
71 5.50 6.88
72 5.55 6.86
73 5.60 6.83
74 5.65 6.80
75 5.70 6.77
76 5.75 6.74
77 5.80 6.71
78 5.85 6.68
79 5.90 6.66
80 5.95 6.63
81 6.00 6.60
82 6.05 6.57
83 6.10 6.54
84 6.15 6.52
85 6.20 6.49
86 6.25 6.46
87 6.30 6.43
88 6.35 6.41
89 6.40 6.38
90 6.45 6.35
91 6.50 6.33
92 6.55 6.30
93 6.60 6.27
94 6.65 6.25
95 6.70 6.22
96 6.75 6.19
97 6.80 6.17
98 6.85 6.14
99 6.90 6.11
100 6.95 6.09
101 7.00 6.06
102 7.05 6.04
103 7.10 6.01
104 7.15 5.98
105 7.20 5.96
106 7.25 5.93
107 7.30 5.90
108 7.35 5.88
109 7.40 5.85
110 7.45 5.83
111 7.50 5.80
112 7.55 5.78
113 7.60 5.75
114 7.65 5.72
115 7.70 5.70
116 7.75 5.67
117 7.80 5.65
118 7.85 5.62
119 7.90 5.60
120 7.95 5.57
121 8.00 5.54
122 8.05 5.52
123 8.10 5.49
124 8.15 5.47
125 8.20 5.44
126 8.25 5.42
127 8.30 5.39
128 8.35 5.37
129 8.40 5.34
130 8.45 5.32
131 8.50 5.29
132 8.55 5.26
133 8.60 5.24
134 8.65 5.21
135 8.70 5.19
136 8.75 5.16
137 8.80 5.14
138 8.85 5.11
139 8.90 5.09
140 8.95 5.06
141 9.00 5.04
142 9.05 5.01
143 9.10 4.99
144 9.15 4.96
145 9.20 4.94
146 9.25 4.91
147 9.30 4.89
148 9.35 4.86
149 9.40 4.84
150 9.45 4.81
151 9.50 4.79
152 9.55 4.76
153 9.60 4.74
154 9.65 4.71
155 9.70 4.69
156 9.75 4.66
157 9.80 4.64
158 9.85 4.61
159 9.90 4.59
160 9.95 4.56
161 10.00 4.54
162 10.05 4.52
163 10.10 4.49
164 10.15 4.47
165 10.20 4.44
166 10.25 4.42
167 10.30 4.39
168 10.35 4.37
169 10.40 4.34
170 10.45 4.32
171 10.50 4.30
172 10.55 4.27
173 10.60 4.25
174 10.65 4.22
175 10.70 4.20
176 10.75 4.18
177 10.80 4.15
178 10.85 4.13
179 10.90 4.11
180 10.95 4.08
181 11.00 4.06
182 11.05 4.04
183 11.10 4.01
184 11.15 3.99
185 11.20 3.97
186 11.25 3.94
187 11.30 3.92
188 11.35 3.90
189 11.40 3.87
190 11.45 3.85
191 11.50 3.83
192 11.55 3.81
193 11.60 3.78
194 11.65 3.76
195 11.70 3.74
196 11.75 3.72
197 11.80 3.69
198 11.85 3.67
199 11.90 3.65
200 11.95 3.63
201 12.00 3.61
202 12.05 3.59
203 12.10 3.56
204 12.15 3.54
205 12.20 3.52
206 12.25 3.50
207 12.30 3.48
208 12.35 3.46
209 12.40 3.44
210 12.45 3.42
211 12.50 3.40
212 12.55 3.38
213 12.60 3.36
214 12.65 3.34
215 12.70 3.32
216 12.75 3.30
217 12.80 3.28
218 12.85 3.26
219 12.90 3.24
220 12.95 3.22
221 13.00 3.20
222 13.05 3.18
223 13.10 3.16
224 13.15 3.14
225 13.20 3.12
226 13.25 3.11
227 13.30 3.09
228 13.35 3.07
229 13.40 3.05
230 13.45 3.03
231 13.50 3.02
232 13.55 3.00
233 13.60 2.98
234 13.65 2.96
235 13.70 2.95
236 13.75 2.93
237 13.80 2.91
238 13.85 2.90
239 13.90 2.88
240 13.95 2.87
241 14.00 2.85
242 14.05 2.83
243 14.10 2.82
244 14.15 2.80
245 14.20 2.79
246 14.25 2.77
247 14.30 2.76
248 14.35 2.74
249 14.40 2.73
250 14.45 2.72
251 14.50 2.70
252 14.55 2.69
253 14.60 2.67
254 14.65 2.66
255 14.70 2.65
256 14.75 2.63
257 14.80 2.62
258 14.85 2.61
259 14.90 2.60
260 14.95 2.58
261 15.00 2.57
262 15.05 2.56
263 15.10 2.55
264 15.15 2.54
265 15.20 2.52
266 15.25 2.51
267 15.30 2.50
268 15.35 2.49
269 15.40 2.48
270 15.45 2.47
271 15.50 2.46
272 15.55 2.45
273 15.60 2.44
274 15.65 2.43
275 15.70 2.42
276 15.75 2.41
277 15.80 2.40
278 15.85 2.39
279 15.90 2.38
280 15.95 2.37
281 16.00 2.37
282 16.05 2.36
283 16.10 2.35
284 16.15 2.34
285 16.20 2.33
286 16.25 2.33
287 16.30 2.32
288 16.35 2.31
289 16.40 2.30
290 16.45 2.30
291 16.50 2.29
292 16.55 2.28
293 16.60 2.28
294 16.65 2.27
295 16.70 2.26
296 16.75 2.26
297 16.80 2.25
298 16.85 2.25
299 16.90 2.24
300 16.95 2.24
301 17.00 2.23
302 17.05 2.23
303 17.10 2.22
304 17.15 2.22
305 17.20 2.21
306 17.25 2.21
307 17.30 2.20
308 17.35 2.20
309 17.40 2.19
310 17.45 2.19
311 17.50 2.19
312 17.55 2.18
313 17.60 2.18
314 17.65 2.17
315 17.70 2.17
316 17.75 2.17
317 17.80 2.16
318 17.85 2.16
319 17.90 2.16
320 17.95 2.15
321 18.00 2.15
322 18.05 2.15
323 18.10 2.14
324 18.15 2.14
325 18.20 2.14
326 18.25 2.13
327 18.30 2.13
328 18.35 2.13
329 18.40 2.13
330 18.45 2.12
331 18.50 2.12
332 18.55 2.12
333 18.60 2.12
334 18.65 2.11
335 18.70 2.11
336 18.75 2.11
337 18.80 2.10
338 18.85 2.10
339 18.90 2.10
340 18.95 2.10
341 19.00 2.09
342 19.05 2.09
343 19.10 2.09
344 19.15 2.08
345 19.20 2.08
346 19.25 2.08
347 19.30 2.07
348 19.35 2.07
349 19.40 2.06
350 19.45 2.06
351 19.50 2.06
352 19.55 2.05
353 19.60 2.05
354 19.65 2.04
355 19.70 2.04
356 19.75 2.03
357 19.80 2.03
358 19.85 2.02
359 19.90 2.02
360 19.95 2.01
361 20.00 2.01
362 20.05 2.00
363 20.10 2.00
364 20.15 1.99
365 20.20 1.98
366 20.25 1.98
367 20.30 1.97
368 20.35 1.96
369 20.40 1.95
370 20.45 1.94
371 20.50 1.94
372 20.55 1.93
373 20.60 1.92
374 20.65 1.91
375 20.70 1.90
376 20.75 1.89
377 20.80 1.88
378 20.85 1.86
379 20.90 1.85
380 20.95 1.84
381 21.00 1.83
382 21.05 1.82
383 21.10 1.80
384 21.15 1.79
385 21.20 1.77
386 21.25 1.76
387 21.30 1.74
388 21.35 1.73
389 21.40 1.71
390 21.45 1.69
391 21.50 1.67
392 21.55 1.66
393 21.60 1.64
394 21.65 1.62
395 21.70 1.60
396 21.75 1.58
397 21.80 1.55
398 21.85 1.53
399 21.90 1.51
400 21.95 1.48
401 22.00 1.46
The value at T=7.35, Vr = 5.88
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