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  2. Calculator input methods - Wikipedia

    en.wikipedia.org/wiki/Calculator_input_methods

    Use memory buttons to ensure that operations are applied in the correct order. Use the special buttons ± and 1/x, that do not correspond to operations in the formula, for non-commutative operators. Mistakes can be hard to spot because: For the above reasons, the sequence of button presses may bear little resemblance to the original formula.

  3. Order of operations - Wikipedia

    en.wikipedia.org/wiki/Order_of_operations

    [6] [7] [a] The parentheses can be omitted if the input is a single numerical variable or constant, [2] as in the case of sin x = sin(x) and sin π = sin(π). [a] Traditionally this convention extends to monomials; thus, sin 3x = sin(3x) and even sin ⁠ 1 / 2 ⁠ xy = sin(xy/2), but sin x + y = sin(x) + y, because x + y is not a monomial ...

  4. Table of keyboard shortcuts - Wikipedia

    en.wikipedia.org/wiki/Table_of_keyboard_shortcuts

    Configure desired keypress in Keyboard and Mouse Preferences, Keyboard Shortcuts, Select the next source in Input menu. [1] Ctrl+Alt+K via KDE Keyboard. Alt+⇧ Shift in GNOME. Ctrl+\ Ctrl+Space: Print Ctrl+P: ⌘ Cmd+P: Ctrl+P: Ctrl+P: Open Help Menu F1 in GNOME: Ctrl+Alt+/ Windows Mobility Center Windows 7: ⊞ Win+X. Windows 10: ⊞ Win+X ...

  5. Reverse Polish notation - Wikipedia

    en.wikipedia.org/wiki/Reverse_Polish_notation

    Video: Keys pressed for calculating eight times six on a HP-32SII (employing RPN) from 1991. Reverse Polish notation (RPN), also known as reverse Łukasiewicz notation, Polish postfix notation or simply postfix notation, is a mathematical notation in which operators follow their operands, in contrast to prefix or Polish notation (PN), in which operators precede their operands.

  6. Typing - Wikipedia

    en.wikipedia.org/wiki/Typing

    Person typing on a laptop keyboard Video of typing on a notebook computer keyboard. Typing is the process of writing or inputting text by pressing keys on a typewriter, computer keyboard, mobile phone, or calculator. It can be distinguished from other means of text input, such as handwriting and speech recognition. Text can be in the form of ...

  7. Enter key - Wikipedia

    en.wikipedia.org/wiki/Enter_key

    One example of this continued division of use is the type tool in Adobe Photoshop, where the return key produces a new line while the enter key ends editing mode. Another is Mathematica , where the Return key creates a new line, while the Enter key (or Shift-Return) submits the current command for execution.

  8. List of mathematical functions - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_functions

    Transcendental functions are functions that are not algebraic. Exponential function: raises a fixed number to a variable power. Hyperbolic functions: formally similar to the trigonometric functions. Inverse hyperbolic functions: inverses of the hyperbolic functions, analogous to the inverse circular functions.

  9. Keyboard technology - Wikipedia

    en.wikipedia.org/wiki/Keyboard_technology

    When typing on a keyboard, a person should keep the shoulders relaxed with the elbows at the side, with the keyboard and mouse positioned so that reaching is not necessary. The chair height and keyboard tray should be adjusted so that the wrists are straight, and the wrists should not be rested on sharp table edges. [20]