## On the Subject of Functions

How in the heck do you get 8 from 1 and 3‽

- A Query Function will be randomly selected from the 42 on List 1, and the bottom displays will show two numbers from 1 to 999, with a letter in between.
- You may enter digits using the numerical keypad; these digits will appear in the center display as they are entered. Entering a digit with twelve digits on the display will cause the leftmost digit to be erased to make room for the new digit.
- You may note the number entered as “a”, the first number of a bivariate (two-variable) function, by pressing the comma button “,”. This will cause the number entered (only the four least significant digits will be entered as the variable if more than four are displayed) to appear in the top left display, and a comma to appear in the top middle display. You may then enter a second, different number in the same way you entered the first.
**If, when querying, both displayed input numbers are the same, or if either number is 0, a strike will be given.** - Once both numbers have been entered, press the Query button “Q”. This will put the second number (only the four least significant digits will be entered as the variable if more than four are displayed) in the top right display, and make it known as “b”. This will also replace your input with the Query Function’s output, using your inputted numbers. Any calculated answers, including the final answer necessary to disarm the module, will use only the twelve most significant digits, and will have all decimals dropped ONLY right before display unless a function mentions otherwise. Pressing the comma will have no effect once it is displayed, and pressing Query will have no effect until the comma is entered or if it was just pressed.
- Press the Clear button “C” to clear all top and middle displays and allow new variables to be entered.
- Find the Query Function being used by querying one or more times and using List 1, then use the letter on the bottom row along with Table 2, finding an offset to apply to that Query Function’s number, to find your Final Function. Wrap around as necessary.
- Submit the answer to the Final Function that uses the bottom displays as input by entering the answer using the keypad, then pressing the Submit button “S”.
- The most significant digits of a number are its leftmost, or most valuable, so the tens digit is more significant than the ones digit.