1<?xml version="1.0" encoding="UTF-8"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN" "http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd" [<!ENTITY mathml 'http://www.w3.org/1998/Math/MathML'>]> 3<html xmlns="http://www.w3.org/1999/xhtml"> 4<head><title>sine_integral</title> 5<!-- MathML created with MathCast Equation Editor version 0.92 --> 6</head> 7<body> 8<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> 9 <mrow> 10 <mi>S</mi> 11 <mi>i</mi> 12 <mfenced> 13 <mrow> 14 <mi>z</mi> 15 </mrow> 16 </mfenced> 17 <mo>=</mo> 18 <mfrac> 19 <mi>π</mi> 20 <mn>2</mn> 21 </mfrac> 22 <mo>−</mo> 23 <msubsup> 24 <mo>∫</mo> 25 <mrow> 26 <mn>0</mn> 27 </mrow> 28 <mrow> 29 <mfrac> 30 <mi>π</mi> 31 <mn>2</mn> 32 </mfrac> 33 </mrow> 34 </msubsup> 35 <msup> 36 <mi>e</mi> 37 <mrow> 38 <mo>−</mo> 39 <mi>z</mi> 40 <mi>cos</mi> 41 <mfenced> 42 <mrow> 43 <mi>t</mi> 44 </mrow> 45 </mfenced> 46 </mrow> 47 </msup> 48 <mi>cos</mi> 49 <mfenced> 50 <mrow> 51 <mi>z</mi> 52 <mi>sin</mi> 53 <mfenced> 54 <mrow> 55 <mi>t</mi> 56 </mrow> 57 </mfenced> 58 </mrow> 59 </mfenced> 60 <mi>d</mi> 61 <mi>t</mi> 62 </mrow> 63</math></body> 64</html>