Texas Instruments TI-89 User Manual - Page 822
format, as a character string based - program exponents
UPC - 033317196326
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FnOn CATALOG FnOn Selects all Y= functions that are defined for the current graphing mode. In split-screen, two-graph mode, FnOn only applies to the active graph. FnOn [1] [, 2] ... [,99] Selects the specified Y= functions for the current graphing mode. Note: In 3D graphing mode, only one function at a time can be selected. FnOn 2 selects z2(x,y) and deselects any previously selected function. In the other graph modes, previously selected functions are not affected. For CATALOG For var, low, high [, step] Program segment: block EndFor © :0!tempsum : 1!step Executes the statements in block iteratively for each value of var, from low to high, in increments of step. :For i,1,100,step : tempsum+i!tempsum :EndFor var must not be a system variable. :Disp tempsum © step can be positive or negative. The default value is 1. Contents of tempsum after block can be either a single statement or a series execution: 5050 of statements separated with the ":" character. Contents of tempsum when step is changed to 2: 2500 format( ) MATH/String menu format(expression[, formatString]) ⇒ string Returns expression as a character string based on the format template. expression must simplify to a number. formatString is a string and must be in the form: "F[n]", "S[n]", "E[n]", "G[n][c]", where [ ] indicate optional portions. F[n]: Fixed format. n is the number of digits to display after the decimal point. S[n]: Scientific format. n is the number of digits to display after the decimal point. format(1.234567,"f3") ¸ "1.235" format(1.234567,"s2") ¸ "1.23í 0" format(1.234567,"e3") ¸ "1.235í 0" format(1.234567,"g3") ¸ "1.235" format(1234.567,"g3") ¸ "1,234.567" E[n]: Engineering format. n is the number of digits after the first significant digit. The exponent is adjusted to a multiple of three, and the decimal point is moved to the right by zero, one, or two digits. format(1.234567,"g3,r:") ¸ "1:235" 822 Appendix A: Functions and Instructions