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Read e-book online Advanced scientific computing in BASIC with applications in PDF

By P. Valko, S. Vajda

ISBN-10: 0080868312

ISBN-13: 9780080868318

ISBN-10: 0444872701

ISBN-13: 9780444872708

This ebook supplies a pragmatic advent to numerical equipment and offers simple subroutines for real-life computations within the parts of chemistry, biology, and pharmacology. the alternative of uncomplicated because the programming language is inspired by means of its simplicity, its availability on all own desktops and by means of its energy in information acquisition. whereas many of the clinical applications at present to be had in simple date again to the interval of constrained reminiscence and velocity, the subroutines awarded right here can deal with a wide diversity of practical issues of the facility and class wanted via pros and with uncomplicated, step by step directions for college kids and newbies. A diskette containing the 37 software modules and 39 pattern courses indexed within the publication is on the market individually. the most activity thought of within the ebook is that of extracting worthwhile info from measurements through modelling, simulation, and statistical facts reviews. effective and powerful numerical equipment were selected to unravel similar difficulties in numerical algebra, nonlinear equations and optimization, parameter estimation, sign processing, and differential equations.

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Additional info for Advanced scientific computing in BASIC with applications in chemistry, biology and pharmacology

Example text

11). This is the basis of the following program module: Prcqram m d u l e M1B 18PI REIl :BE? N,W! a REIl DlflENSION GF RbTRlX RATRIX IONLY LOWER TRIANGLE IS USED) IBla fiEM W P U T : 1818 PEfl Ulh,J) l=i TO N, EIGENVRLUES l8lE PEll ! I N DECREASING ORDER) 1922 RE1 U[l,J) 11 . TO N, J-TH EIGENVECTDR ! 1 TO W 1928 U I I , I j z - ( I z J I iB3R C E l i J :ftElT I 1e; :'=l :9;1 FOE 1=2 TO N :FOR J:! ie3t I ,J)i :NEXT I VZV~RBSIA; i83B Nil: TO I-! =kiI@,l@) THEN 1. J0! '3tV4i lab! 'I) i964 S=TtC lR68 18'0 IS!?

I0 DRTA 5 11: DATA 4,2, =,I =,? 1! 01 RE! ---------- READ DATA :a2 HER3 I 104 D Ill A I1 ,B(N i,C(1; 1 ,D I 10 ,X ( k ! ,P (ti1 205 FOP I=! I0 HEAD B(I! 212 IF I < N THE# READ CiI) 214 HERD R$,O(I) 216 Rili 1 TIE REIl ---------- C K L SOLUTION MODULE 2 0 GOSUB 1780 2 2 :PRINT "SOLUTION:" :LPPINT 2 4 V$:STRING$i 15,"-" J 2 5 LF'RI#T " I X(I)n 228 LPHINT v1 2 3 FOE I:! 1 w e defined the eigenvalue h and the eigmvector u of the n m matrix A to satisfy the matrix equation (&XI)U = 0 . , its righ-hand side is are zero), and has a ncnzero solution if and only if the c o l m s of (&XI) linearly dependent.

49). To form the permutation matrix P we will interchange those rows of the identity matrix I that have been interchanged in A in the course of the Gaussian elimination. Let (i,ki) denote the operation of interchanging row5 i and ki in the i-th step, We then what w e did is identity matrix P = 1 0 0 0 0 0 1 0 0 0 0 1 I (l,l), (2,4) and (3,4) . 50) L can be constructed from the rrultipliers used in the elimination steps if we adjust them according to the rows interchanged. 8). 4). 5), used in this last step, remains unchanged.

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Advanced scientific computing in BASIC with applications in chemistry, biology and pharmacology by P. Valko, S. Vajda

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