Difference between revisions of "Cosine"
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(Created page with "The cosine function is the unique solution of the differential equation $$y''=-y;y(0)=1.$$") |
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| − | The cosine function is the unique solution of the | + | The cosine function is the unique solution of the second order initial value problem |
$$y''=-y;y(0)=1.$$ | $$y''=-y;y(0)=1.$$ | ||
Revision as of 20:31, 2 October 2014
The cosine function is the unique solution of the second order initial value problem $$y=-y;y(0)=1.$$
