gibson:teaching:fall-2014:math445:hw2
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gibson:teaching:fall-2014:math445:hw2 [2014/09/15 11:53] gibson created |
gibson:teaching:fall-2014:math445:hw2 [2014/09/22 09:06] (current) gibson |
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| sum, any, all, linspace | sum, any, all, linspace | ||
| - | plot, semilogy, semilogx, xlabel, ylabel, legend, axis | + | plot, semilogy, semilogx, xlabel, ylabel, legend, axis, |
| + | hist, randn | ||
| **Problem 1:** Write a Matlab expression that sums the first N of each series and evaluate it for N=100. | **Problem 1:** Write a Matlab expression that sums the first N of each series and evaluate it for N=100. | ||
| Line 33: | Line 34: | ||
| **Problems 5-11:** Turn in the Matlab code and the figures. Always label the figures appropriately, using ''title'', ''xlabel'' and either ''ylabel'' or ''legend''. The figures should be titled "Problem 5", etc. Read ''help'' for the following functions and then experiment with them to see how they affect the plot. | **Problems 5-11:** Turn in the Matlab code and the figures. Always label the figures appropriately, using ''title'', ''xlabel'' and either ''ylabel'' or ''legend''. The figures should be titled "Problem 5", etc. Read ''help'' for the following functions and then experiment with them to see how they affect the plot. | ||
| - | clf | + | figure, clf, hold on, hold off |
| - | hold on | + | grid, xticks, yticks |
| - | hold off | + | axis([xmin xmax ymin ymax), axis equal, axis square |
| - | figure | + | |
| - | grid | + | |
| - | xticks | + | |
| - | yticks | + | |
| **Problem 5:** Plot sin(x) versus x for 100 evenly space points in x from 0 to 2pi, using a solid blue line. | **Problem 5:** Plot sin(x) versus x for 100 evenly space points in x from 0 to 2pi, using a solid blue line. | ||
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| **Problem 6:** Plot sin(x) in red, cos(x) in green, over same x as problem 5. Use 'legend' to indicate which function is shown in which color. | **Problem 6:** Plot sin(x) in red, cos(x) in green, over same x as problem 5. Use 'legend' to indicate which function is shown in which color. | ||
| - | **Problem 7:** Plot $y = 5x^2 - 4x - 3$ for 100 evenly space points in x from -2 to 2. Superimpose an x,y grid on the plot. | + | **Problem 7:** Plot $y = 5x^2 - 4x - 3$ for 40 evenly space points in x from -2 to 2, using a red line and a circle on each data point. Superimpose an x,y grid on the plot. |
| **Problem 8:** Make a plot of the unit circle. Make sure it's closed --no gap! Hint: use ''linspace'' to specify a range of angles, then ''cos'' and ''sin'' to produce vectors of the x,y coordinates of points on the unit circle. | **Problem 8:** Make a plot of the unit circle. Make sure it's closed --no gap! Hint: use ''linspace'' to specify a range of angles, then ''cos'' and ''sin'' to produce vectors of the x,y coordinates of points on the unit circle. | ||
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| appropriate plotting function. Again, it ain't ''plot''! | appropriate plotting function. Again, it ain't ''plot''! | ||
| - | **Problem 11:** Make a histogram of 1000 random numbers from a normal (Gaussian) distribution. | + | **Problem 11:** Make a histogram of 1000 random numbers from a normal (Gaussian) distribution. Use Matlab's ''hist'' and ''randn'' functions. |
gibson/teaching/fall-2014/math445/hw2.1410807187.txt.gz · Last modified: 2014/09/15 11:53 by gibson
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