Create x and y vectors to represent the following data: 10 23 20 45 30 60 40 82 50 111 60 140 70 167 80 198 90 200 100 220 1. Use the polyfit function to fit the data for a second-order polynomial. 2. Create a vector of new x values from 10 to 100 in intervals of 2. Use your new vector in the polyval function together with the coefficient values found in part 1 to create a new y vector. 3. Plot the original data as circles without a connecting line and the calculated data as a solid line on the same graph.

Create x and y vectors to represent the following data: 10 23 20 45 30 60 40 82 50 111 60 140 70 167 80 198 90 200 100 220 1. Use the polyfit function to fit the data for a second-order polynomial. 2. Create a vector of new x values from 10 to 100 in intervals of 2. Use your new vector in the polyval function together with the coefficient values found in part 1 to create a new y vector. 3. Plot the original data as circles without a connecting line and the calculated data as a solid line on the same graph.

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

Create x and y vectors to represent the following data:
y
10
23
20
45
30
60
40
82
50
111
60
140
70
167
80
198
90
200
100
220
1. Use the polyfit function to fit the data for a second-order polynomial.
2. Create a vector of new x values from 10 to 100 in intervals of 2. Use your new vector in the
polyval function together with the coefficient values found in part 1 to create a new y vector.
3. Plot the original data as circles without a connecting line and the calculated data as a solid line
on the same graph.

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