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Section V Decision Commands MARK - PRIME. Key X, SEARCH 0 . 0 X 2 ST DIR REG 02 I ST DIR REG 01 I • U"l 0 .~ ~ ~ -0 -0 '" "'" E-" -0 ~ " '" --'" ~ ;:l '" U MARK 0800 REDIR REG 02 .;. DIR REG 01 REDIR REG 01 Ex changes Tn and S to save previous S. () + SKIP Y = X Exits from loop when addition of term no longer affects SEARCH 0800 STOP sum. The program calculates the sum k ~ n=O I Xn to 12 significant digits for any value of x. The loop is performed many more times fat a smaller value of x than it would be for a larger value of x, simply because the series converges faster for large values of x. In all cases when Tn < 10- 1 I, the loop is terminated and the final sum is displayed in x and y. If only three digits of accuracy were needed, each successive term could be compared to 10- 3 ; and when Tn < 10- 3, the loop could be terminated. 5·7