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4. Load the Matlab data called hahn 1. To load hahn1, type load hahn 1 into your script. Please do the following with the data: Use the function fit to fit a second order polynomial to the temp and thermex data (it will not fit well).Use temp as your x data and thermex as your y data. Then, use the curve fitting toolbox to create a fit of your choice. Again, use temp as your x data and thermex as your y data. Explain why you chose that fit