Difference between revisions of "Derivative of sine integral"
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Latest revision as of 19:44, 10 December 2016
Theorem
The following formula holds: $$\dfrac{\mathrm{d}}{\mathrm{d}z} \mathrm{Si}(z) = \mathrm{sinc}(z),$$ where $\mathrm{Si}$ denotes the sine integral and $\mathrm{sinc}$ denotes the sinc.
