User manual TEXAS INSTRUMENTS TI-30XB

[. . . ] For menu items followed by an argument value, enter the argument value while the item is underlined. After an expression is evaluated, use # and $ to scroll through previous entries, which are stored in the TI-30X memory. You can edit a previous entry and press < to evaluate the new expression. To recall the value of Ans: Press % i (Ans displays on the screen), or ? [. . . ] Each subsequent time you press <, the TI-30X recalls the stored operation and applies it to the last answer or the current entry. You can store a real number or an expression that results in a real number to a memory variable. FLO (default): Floating Notation, with digits to the left and right of the decimal SCI: Scientific Notation ENG: Engineering Notation (exponent is a multiple of 3) 1-VAR analyzes statistical data from 1 data set with 1 measured variable, x. 2-VAR stats analyzes paired data from 2 data sets with 2 measured variables--x, the independent variable, and y, the dependent variable. In 1-VAR stat mode, enter the frequency of occurrence (FRQ) of the data point. You must press < or $ to save the last data point or FRQ value entered. If you add or delete data points, the TI-30X automatically reorders the list. When all points and frequencies are entered: Press u to display the menu of variables (see table for definitions) and their current values, or ?Select a variable from the u menu and then press < to evaluate the calculation. When finished: Press % t and select CLRDATA to clear all data points without exiting STAT mode, or ?Press % w < to clear all data points, variable and FRQ values, and to exit STAT mode (STAT indicator turns off). Calculates the number of possible permutations of n items taken r at a time, given n and r. Calculates the number of possible combinations of n items taken r at a time, given n and r. The seed value changes randomly every time a random number is generated. Generates a random integer between 2 integers, A and B, where A { RAND[ { B. EQUATION LENGTH ERROR -- An entry exceeds the digit limits (88 for Entry Line and 47 for Stat or Constant Entry lines); for example, combining an entry with a constant that exceeds the limit. SYNTAX -- The command contains a syntax error: entering more than 23 pending operations or 8 pending values; or having misplaced functions, arguments, parentheses, or commas. Using a small Phillips screwdriver (if necessary), remove old battery; replace with new one. [. . . ] Some states/provinces do not allow the exclusion or limitation of implied warranties or consequential damages, so the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to state or province to province. During the above one (1) year warranty period, your defective product will be either repaired or replaced with a reconditioned model of an equivalent quality (at TI's option) when the product is returned, postage prepaid, to Texas Instruments Service Facility. The warranty of the repaired or replacement unit will continue for the warranty of the original unit or six (6) months, whichever is longer. [. . . ]