18 citations · 42 across the 13 of their papers we have counts for
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Horst Alzer, Man Kam Kwong
We present several new inequalities for trigonometric sums. Among others, we show that the inequality $$ \sum_{k=1}^n (n-k+1)(n-k+2)k\sin(kx) > \frac{2}{9} \sin(x) \bigl( 1+2\cos(x…