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File:Sine integral.svg


English: The plot of integral of the sinc function: \mathrm{Si}(x)=\int\limits_0^x\frac{\sin(t)}{t}dt having an asymptote at x=\pi/2
This vector graphics image was created with Asymptote.
Date 8 June 2011
Source Own work
Author Krishnavedala


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This image has been created using python and can also be plotted using the following matlab source code.

margin = 0.3;
x = 0:0.01*pi:8*pi;  y = sinint(x);
plot(x,y); hold on
plot( [min(x) max(x)], [pi/2 pi/2] , 'k:')  % the asymptote
axis([min(x) max(x)  min(y)  max(y)+margin])
title('{\bfSine integral}'); legend('Si({\itx})', 'asymptote at {\itx}\rightarrow\infty')
xlabel('$x$', 'Interpreter','latex')
ylabel('${\mathop{\rm Si}\nolimits} \left( x \right) = \int\limits_0^x {\frac{{\sin t}}{t}dt}$',...
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