JULIA based Problem Set 4 
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Problem set 4 lets your monitor your progress easily.  You can readily see what
problems you need to work on to get a 42 out of 42.
Hope you like it.
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Just run your notebook in <a href="http://juliabox.org"> juliabox </a>.
Cells are executed with shift+enter and then submit to submit your answer.  The first cell triggers autograding.
The second cell triggers progress monitoring.
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TO OBTAIN THE NOTEBOOK: <br>
In the console type the command <br>
wget http://web.mit.edu/18.06/www/Spring15/1806pset4.ipynb
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and then go to IJulia Notebooks  and refresh. <br><br>