Formula:2928

Digital Library of Mathematical Functions ID 6.2.E19

${\displaystyle{\displaystyle\mathrm{Si}\left(z\right)=\tfrac{1}{2}\pi-\mathrm{f}\left(z\right)\cos z-\mathrm{g}\left(z\right)\sin z,}}$

Symbols List

• ${\displaystyle{\displaystyle\pi}}$: the ratio of the circumference of a circle to its diameter
• ${\displaystyle{\displaystyle\cos\NVar{z}}}$: cosine function
• ${\displaystyle{\displaystyle\sin\NVar{z}}}$: sine function
• ${\displaystyle{\displaystyle\mathrm{f}\left(\NVar{z}\right)}}$: auxiliary function for sine and cosine integrals
• ${\displaystyle{\displaystyle\mathrm{g}\left(\NVar{z}\right)}}$: auxiliary function for sine and cosine integrals
• ${\displaystyle{\displaystyle\mathrm{Si}\left(\NVar{z}\right)}}$: sine integral
• ${\displaystyle{\displaystyle z}}$: complex variable
 

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