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Add logarithim to Qalculate!

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Lyn Perrine 2025-02-25 13:36:13 -08:00
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source/2/2.4/2.4.3/Qalculate.rst
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@ -5,7 +5,7 @@ Qalculate! is the default calculator shipped in Lubuntu since 25.04.
Usage
-----
To do simple airithmetic computations type the numbers into the field just below the toolbar. To start a calculation press :kbd:`enter` or press the :guilabel:`=` button. To add multiple numbers press :kbd:`+` or click the :guilabel:`+` button. To subtract two numbers press :kbd:`-` or click :guilabel:`-`. To multiply two numbers press :kbd:`*` or click :guilabel:`x`. To divide two numbers press :kbd:`/` or click the :guilabel:`/` button. To input decimals into Qalculate! type :kbd:`.` as the decimal point or click :guilabel:`.` To input the last answer you calculated click the :guilabel:`ANS` button. To delete the last character you typed press :kbd:`backspace` or click the :guilabel:`trash can` button. To clear all you have inputted left click the :guilabel:`Leftward pointing arrow with an x` button. To start doing an operation first use a parenthesis to do an operation first :kbd:`(` or click :guilabel:`(`. To close the operation you want to do first in order of operations use a close parenthesis so press :kbd:`)` or left click on :guilabel:`)`. To have both an open and close parentheses click the :guilabel:`(x)` button. If you have an error in your syntax an orange triangle will show up. To get more information on what your error is mouseover the orange triangle.
To do simple airithmetic computations type the numbers into the field just below the toolbar. To start a calculation press :kbd:`enter` or press the :guilabel:`=` button. To add multiple numbers press :kbd:`+` or click the :guilabel:`+` button. To subtract two numbers press :kbd:`-` or click :guilabel:`-`. To multiply two numbers press :kbd:`*` or click :guilabel:`x`. To divide two numbers press :kbd:`/` or click the :guilabel:`/` button. To input decimals into Qalculate! type :kbd:`.` as the decimal point or click :guilabel:`.` To input the last answer you calculated click the :guilabel:`ANS` button. To delete the last character you typed press :kbd:`backspace` or click the :guilabel:`trash can` button. To clear all you have inputted left click the :guilabel:`Leftward pointing arrow with an x` button. To start doing an operation first use a parenthesis to do an operation first :kbd:`(` or click :guilabel:`(`. To close the operation you want to do first in order of operations use a close parenthesis so press :kbd:`)` or left click on :guilabel:`)`. To have both an open and close parentheses click the :guilabel:`(x)` button. If you have an error in your syntax an orange triangle will show up. To get more information on what your error is mouseover the orange triangle. To get more information on a button you can also mouseover that button.
.. image:: qalculate-mainwindow.png
@ -15,6 +15,8 @@ To copy text from Qalculate! select the text and press :kbd:`Control + C` or rig
To exponentiate a base number to a power left click x :sup:`y` or type :kbd:`^`. To square a number right click x :sup:`y` or type :kbd:`sq()` around what you want to square. To raise e to a power middle click x :sup:`y` or type :kbd:`exp()` around what power you want to raise e to. To take the square root of something left click the :guilabel:`√` button or insert a :kbd:`√` character. To take the cube root of something right click the :guilabel:`√` button or type :kbd:`cbrt()`. To take the nth root of something middle click on the :guilabel:`√` button or type :kbd:`root( , )` where the first thing is what you are taking the root of and the second is which root to take.
To take a natural lograrithm left click on the :guilabel:`ln` button or type in :kbd:`ln()`. To take a logarithim on base 10 right click on the :guilabel:`ln()` button or type in :kbd:`log10()`. To take a logarithim with base n middle click on :guilabel:`ln` and then input your base.
Version
-------
Lubuntu ships with version 5.5.0 of Qalculate!