Matrix Elements VB-800 Manuel d'utilisateur Page 113

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Appendix A5
OxGauss Function Summary
abs(a);
returns absolute value of a
arccos(a);
returns arccosine of a
arcsin(a);
returns arcsine of a
arctan,arctan2
see atan,atan2
atan(a);
returns arctangent of a
atan2(y,x);
returns arctangent of y ./ x
{x,s}=balance(a);
returns balanced matrix x and diagonal scale matrix s
band(a,n);
returns banded matrix with bandwidth n (diagonal + n)
bandchol(b);
returns Choleski decomposition of banded matrix
bandcholsol(b,r);
solves system where b is output from bandchol, and r is right-hand side
bandltsol(mb,ma);
as bandsolpd
bandrv(mx);
undoes band()
bandsolpd(mb,ma);
solves system where b band matrix, and r is right-hand side
{mantissa,power}=base10(x);
writes x as m 10
p
, 10 <m<10
besselj(n,x);
returns Bessel function J
n
(x) for integer n
bessely(n,x);
returns Bessel function Y
n
(x) for integer n
105
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