Trigo-trigo-nometry

Algebra Level pending

For 0 < x 2 π 0 < x \le 2\pi , the equation

0 x sin ( sin t ) d t = 0 \int _{ 0 }^{ x }{ \sin ({ \sin { t } ) } } dt = 0

has how many solutions?

2 Solutions 3 Solutions No Solutions 1 Solution

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1 solution

Harri Bell-Thomas
Oct 11, 2014

The graph of y = sin ( sin t ) y= \sin ({ \sin { t } }) will look very similar to the standard sine graph (with the same x-axis intercepts), though not having maximums and minimums of the same height.

Therefore the area underneath this graph will equal 0 at;

t = 0 , 2 π , . . . t = 0, 2\pi, ...

The only solution inside the range is t = 2 π t = 2\pi ; there is only 1 solution .

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