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Results tagged with inequalities
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user 105651
for questions involving inequalities, upper and lower bounds.
5
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An integral trigonometric inequality
Problem 1. Suppose that $\xi>0$ and $\sin(2\xi)<0$.
Let $$b_\nu=(N-v+1)\tfrac{\pi}{\xi}\quad\mbox{for}\quad\nu=1,\dots,N:=\big[\tfrac{\xi}{\pi}\big].$$
Prove that
$$\mathrm{sgn}(\sin \xi)\int …
- 4,535