Texas Instruments TI-34 II General Information - Page 1

TI.34 × Explorer Plusé Scientific Calculator Copyright © 1999 Texas Instruments General Information Examples: See the last page of these instructions for keystroke examples that demonstrate many of the TI-34 Ö functions. Examples assume all default settings. & turns on the TI-34 Ö. % ' turns it off and clears the display. APD™ (Automatic Power Down™) turns off the TI-34 Ö automatically if no key is pressed for about 5 minutes. Press & after APD. The display, pending operations, settings, and memory are retained. 2-Line Display: The first line (Entry Line) displays an entry of up to 88 digits (or 47 digits for Stat or Constant Entry Line). Entries begin on the left; those with more than 11 digits scroll to the right. Press ! and " to scroll the line. Press % ! or % " to move the cursor immediately to the beginning or end of the entry. The second line (Result Line) displays a result of up to 10 digits, plus a decimal point, a negative sign, a "x10" indicator, and a 2-digit positive or negative exponent. Results that exceed the digit limit are displayed in scientific notation. Indicator 2nd FIX STAT RAD ÄÄQÄÄ ÄÄRÄÄ N/D¹n/d º » ¹ ¸ Definition 2nd function. Fixed-decimal setting. Statistical mode. Angle mode set to radians. Displays quotient (Q) and remainder (R) for integer divide result. The fractional result can be further simplified. An entry is stored in memory before and/or after the active screen. Press # and $ to scroll. An entry or menu displays beyond 11 digits. Press ! and " to scroll. 2nd Functions: % displays the 2nd indicator, and then selects the 2nd function (printed above keys) of the next key pressed. For example, % b 25 E < calculates the square root of 25 and returns the result, 5. Menus: Certain TI-34 Ö keys display menus: z, % h, L, % d, % ~, % A, % B, % t, u, % w, H, % I, =, % k, % ,, and % . Press ! and " to move the cursor and underline a menu item. To return to the previous screen without selecting the item, press -. To select a menu item: ¦ Press < while the item is underlined, or ¦ For menu items followed by an argument value, enter the argument value while the item is underlined. The item and the argument value are displayed on the previous screen. Previous Entries #$ After an expression is evaluated, use # and $ to scroll through previous entries, which are stored in the TI-34 Ö memory. You cannot retrieve previous entries while in STAT mode. Last Answer %i The most recently calculated result is stored to the variable Ans. Ans is retained in memory, even after the TI-34 Ö is turned off. To recall the value of Ans: ¦ Press % i (Ans displays on the screen), or ¦ Press any operations key (T, U, F, etc.) as the first part of an entry. Ans and the operator are both displayed. Order of Operations The TI-34 Ö uses EOSé (Equation Operating System) to evaluate expressions. 1st Expressions inside parentheses. 2nd Functions that need a ) and precede the argument, such as the sin, log, and all RÍP menu items. 3rd Fractions. 4th Functions that are entered after the argument, such as x2 and angle unit modifiers (Ä Å Æ r). 5th Exponentiation (^) and roots (xÑ). 6th Negation (M). 7th Permutations (nPr) and combinations (nCr). 8th Multiplication, implied multiplication, division. 9th Addition and subtraction. 10th Conversions (A bÌcÍdÌe, 4F, 4D, 4%, 4DMS). 11th < completes all operations and closes all open parentheses. Clearing and Correcting - J % f % { % t CLRDATA % w Y %  Y or & & - ¦ Clears an error message. ¦ Clears characters on entry line. ¦ Moves the cursor to last entry in history once display is clear. Deletes the character at the cursor. Deletes all characters to the right when you hold down J; then, deletes 1 character to the left of the cursor each time you press J. Inserts a character at the cursor. Clears all memory variables. Clears all data points without exiting STAT mode. Clears all data points and exits STAT mode. Resets the TI-34 Ö. Returns unit to default settings; clears memory variables, pending operations, all entries in history, and statistical data; clears constant mode and Ans. Math Operations %d % d displays a menu with various math functions. Some functions require you to enter 2 values, real numbers or expressions that equal return a real number. % ` separates two values. abs(#) round(#,digits) iPart(#) fPart(#) min(#1,#2) max(#1,#2) lcm(#1,#2) gcd(#1,#2) #3 3Ñ(#) remainder(#1,#2) Displays absolute value of #. Rounds # to specified number of digits. Returns only the integer part (iPart) or fractional part (fPart) of #. Returns the minimum (min) or maximum (max) of two values, #1 and #2. Finds the least common multiple (lcm) or greatest common divisor (gcd) of two values, #1 and #2. Calculates the cube of #. Calculates the cube root of #. Returns the remainder resulting from the division of 2 values, #1 by #2. Integer Divide %Y % Y divides 2 positive integers and displays the quotient, Q, and the remainder, R. Only the quotient is stored to Ans. Fractions % ~ ? O N >}RQ Fractional calculations can display fractional or decimal results. % ~ displays a menu of 4 display mode settings. These determine how fraction results are displayed. You select 2 items: ¦ AËb/c displays mixed number results. ¦ d/e (default) displays fraction results. ¦ Manual (default) displays unsimplified fractions. ¦ Auto displays fraction results simplified to lowest terms. @ separates a whole number from the fraction in a mixed number, and > separates a numerator from the denominator. The denominator must be a positive integer. To negate a fraction, press M before entering numerator. } < simplifies a fraction using the lowest common prime factor. If you want to choose the factor (instead of letting the calculator choose it), press }, enter the factor (an integer), and then press