Note: This help page is under construction. More information will be available soon!

  • Thank you for your interesting in MatCalc

Basic Operation

Enter the expression and press enter! It's that easy ;-)

You can type expression in two ways in MatCalc. First with the keypad and second with iPhone/iPad keyboard. Normally you would use the keypad and use keyboard when you want to edit the expression. We'll call the latter "edit mode". In edit mode you can use all the features of iPhone/iPad text input. Copy,cut,paste and shake to undo are all available in edit mode.

Hints:
- While you editing the expression, it will appear in blue. After you press enter the latest result will displays in the history and highlighted in blue and the calculated expression will turn to black color.
- The latest expression you enter stills remain in the expression text field. If you type in the operator then MatCalc will enclose the old expression in parenthesis and append the new operator. However if the next character you type in is number or identifier then MatCalc will delete the old expression.
ie.
old expression is 1+2
type / and you will get (1+2)/

old expression is 1+2
type 5 and you will get 5

- While you typing the new expression and type ")" and there were no matching "(" then MatCalc will automatically insert "(" at the beginning of the expression. If you already have matching "(" in the expression previously then there were no extra "(" added.
ie.
current expression is 1+2
type ) and you will get (1+2)

- You can disable the auto parenthesis in Setting
- If you don't prefer MatCalc to kept the old expression after you press enter then you can disable it in Setting. If this feature is disable then MatCal will automatically fill in "ans" if your type in any operators immediately after the last calculation.
- "ans" is system variable that hold the last calculation result.

Operators

Basic operators
    • +
    		plus
    -
    		minus
    *
    		multiply
    /
    		devision
    ^
    		power (ie. 2^3 = 2³)
    //
    		root (ie. 2//3 equals to ³√2)
    !
    		factorial
    %
    		percent
    &
    		and
    |
    		or
    ^^
    		xor
    %%
    		modulo

Variables and SI Prefixs

Special variable & SI prefixs
  • Variables
    • ans
    answer
    		hold last result
    π
    pi
    		3.14...
    φ
    phi
    		1.62...
  • SI prefixs
    • p
    pico
    		1e-12
    n
    nano
    		1e-9
    u
    micro
    		1e-6
    m
    milli
    		1e-3
    k
    kilo
    		1e3
    M
    mega
    		1e6
    G
    giga
    		1e9
    T
    tera
    		1e12

You can enter the number in your expression follow by π,φ or SI prefix
ie.
2π = 2*pi = 6.28..
2.1M = 2,100,000
1.5k = 1,500
2p = 2e-12

in you expression
1) type 2M+12
2) press Enter
result = 2,000,012

Working with history

  • In each row of history table there are 3 information displayed
  • 1) Calculation result. The latest result will displayed in bold&blue color
  • 2) Expression. Displayed with smaller font than the result and located on the top left corner of each row.
  • 3) Angle mode. There are two angle modes used in trigonometry functions. Degree and Radian. The active angle mode produce result of each row are displayed below the expression.
  • - If you tap a row in history table, current expression will be replaced with the expression from history. Noted that active angle mode will changed to matched with the mode in that row. This is the same in both mode.
  • - When current expression is empty, if you press and hold a row in history table, current expression will be replaced with the result from that row.
  • - When current expression is not empty, if you press and hold a row in history table, you will given a choice of what to do.

Basic functions

  • Under construction