Dear Participants, assalam alaikum!!


a- Note the following proof that 2 = 1




What is wrong with this proof?




b- I posted the Mathematica program which I used yesterday on the course web-site.

Please load it on your computed, and run it [assuming you have Mathematica if you dont, get yourself a copy!].


Next week, we will go into damping, and there is when we will need to use beta.




c- Below are a few interesting web-sites on Oscillatory Motion (and more!). Please take some time to browse these pages, especially the last one!


A math plotter:, and especially:









Also,, to:



Also, somewhat advanced



Also, somewhat advanced



Also [nice, use it in the lecture]:



Also,, click mechanics, then to periodic motion, and then to pendulum, for example.