how can i solve

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mohammed tharwat 2015-3-22

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https://ww2.mathworks.cn/matlabcentral/answers/184472-how-can-i-solve

回答： Image Analyst 2015-3-22

X  0  0.5  1.5  2  3  4  5
Y  0.32  2.6  7.05  11.74  15.83  22.3  25.9

a) Plot the data in the above table as 'diamonds' (not connected by line).

b) Obtain the best fitting line to the data. (Write the equation on this paper).

c) Add to the previous figure a plot of the best fitting line. Use more data points for this plot. Use x values ranging from 0 to 5 in a step of 0.1. This curve must be a line (without symbols).

d) Add grid to the plot.

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Star Strider 2015-3-22

Give it a go yourself this time.

You will need to read the plot, polyfit, polyval, and Colon(:) documentation.

Giorgos Papakonstantinou 2015-3-22

Please take a look here.

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Answer 1

Image Analyst 2015-3-22

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/184472-how-can-i-solve#answer_172283

polyfit_demo.m

I imagine it's like the demo in the help but maybe a bit fancier. See attached demo (below the image it creates) that I've posted before. Adapt as needed.