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48 Compact numerical methods for computers
some analysis or prediction. To underline the difficulty of this task, merely
consider the alternative model
income = x + x (phosphate) (3.53)
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3
for which the singular values are computed as 1471·19 and 0·87188, again quite
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collinear. The solutions are (e) and (f) in table 3.2 and the values of R speak for
themselves.
A sample driver program DR0102.PAS is included on the program diskette.
Appendix 4 describes the sample driver programs and supporting procedures and
functions.