... numerical answer can be obtained even when a problem has no analytical solution However, result from numerical analysis is an approximation, in general, which can be made as accurate as desired ... 0 .28 5714 a quotient which is a nonterminating decimal fraction For using such a number in practical computation, it is to COMPUTER BASED NUMERICAL AND STATISTICAL TECHNIQUES be cut-off to a manageable ... significant figures at each step of computation At each step of computations, retain at least one more significant figure than that given in the data, perform the last operation, and then round off...