Texas Instruments voyage 200 User Manual - Page 853

product(matrix1[, start[, end]]) ⇒ matrix Returns a row vector containing the products of the elements in the columns of matrix1. Start and end are optional. They specify a range of rows. product([1,2,3;4,5,6;7,8,9]) ¸[28 8 product([1,2,3;4,5,6;7,8,9], 1,2) ¸ [4,10,18] Prompt CATALOG Prompt var1[, var2] [, var3] ... Displays a prompt on the Program I/O screen for each variable in the argument list, using the prompt var1?. Stores the entered expression in the corresponding variable. Prompt must have at least one argument. Program segment: © Prompt A,B,C © EndPrgm propFrac( ) MATH/Algebra menu propFrac(expression1[, var]) ⇒ expression propFrac(4/3) ¸ propFrac(rational_number) returns rational_number as the sum of an integer and a fraction having the same sign and a greater denominator magnitude than numerator magnitude. propFrac(ë 4/3) ¸ propFrac(rational_expression,var) returns the sum of proper ratios and a polynomial with respect to var. The degree of var in the denominator exceeds the degree of var in the numerator in each proper ratio. Similar powers of var are collected. The terms and their factors are sorted with var as the main variable. propFrac((x^2+x+1)/(x+1)+ (y^2+y+1)/(y+1),x) ¸ If var is omitted, a proper fraction expansion is done with respect to the most main variable. The coefficients of the polynomial part are then made proper with respect to their most main variable first and so on. propFrac(ans(1)) For rational expressions, propFrac() is a faster but less extreme alternative to expand(). 1 + 1/3 ë 1ì 1/3 PtChg CATALOG PtChg x, y PtChg xList, yList Note: PtChg through PtText show continuing similar examples. Displays the Graph screen and reverses the screen PtChg 2,4 ¸ pixel nearest to window coordinates (x, y). PtOff CATALOG PtOff x, y PtOff xList, yList Displays the Graph screen and turns off the screen pixel nearest to window coordinates (x, y). PtOff 2,4 ¸ Appendix A: Functions and Instructions 855