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Expintegral_e1

Function: expintegral_e1 (<z>) The Exponential Integral E1(z) (A&S 5.1.1)

h=4/8*exp(0.0125)*(expintegral_e1(0.0125));
f(x):= exp(-x^2/8)/(0.1+x^2)*x*bessel_j(0, x*r);
z(r):=4/4*(first(quad_qagi(f(x),x,0.0125,inf)));
z(0);
z(0.1);
z(0.2);
z(0.3);
z(0.4);
z(0.5);
z(0.6);
z(0.7);
z(0.8);
z(0.9);
z(1.1);
z(1.2);
z(1.3);
z(1.4);
z(1.5);
z(1.6);
z(1.7);
z(1.8);
z(1.9);
z(1);
z(2);
z(3);
z(4);
z(5);
z(7);
z(10);
z(15);
z(20);

(%o1)                                true
(%i2) 

Related Examples

expintegral_e1

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expintegral_e1

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