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Add section titles to Qalculate

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Lyn Perrine 2025-02-28 14:56:29 -08:00
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source/2/2.4/2.4.3/Qalculate.rst
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@ -15,18 +15,26 @@ To copy text from Qalculate! select the text and press :kbd:`Control + C` or rig
To store a value in calculator memory left click the :guilabel:`MS` button. To later get the same value out of the calculator left click the :guilabel:`MR` button. To clear the memory stored in the calculator press the :guilabel:`MC` button. To store a value in calculator memory left click the :guilabel:`MS` button. To later get the same value out of the calculator left click the :guilabel:`MR` button. To clear the memory stored in the calculator press the :guilabel:`MC` button.
Saving Variables
----------------
To save a new variable in Qalculate! press :kbd:`Control +S` or left click the :guilabel:`floppy disk` icon and a window will popup. Type a name for your variable in the :guilabel:`Name` field. The :guilabel:`Required` tab is for required fields for your variable. Type what you want your variable to be equal too in the :guilabel:`Value` field. To add additional description to your variable use the :guilabel:`Description` tab. Choose which category to put this variable in in :guilabel:`Category`. To give a descriptive name to your variable type that in :guilabel:`Descriptive name`. To toggle hiding a variable check/uncheck the :guilabel:`Hide variable` checkbox. To add more description to your variable type that in the :guilabel:`Description` field. To save a new variable in Qalculate! press :kbd:`Control +S` or left click the :guilabel:`floppy disk` icon and a window will popup. Type a name for your variable in the :guilabel:`Name` field. The :guilabel:`Required` tab is for required fields for your variable. Type what you want your variable to be equal too in the :guilabel:`Value` field. To add additional description to your variable use the :guilabel:`Description` tab. Choose which category to put this variable in in :guilabel:`Category`. To give a descriptive name to your variable type that in :guilabel:`Descriptive name`. To toggle hiding a variable check/uncheck the :guilabel:`Hide variable` checkbox. To add more description to your variable type that in the :guilabel:`Description` field.
Functions
---------
To bring up an extensive list of functions left click the :guilabel:`fx` button or press :kbd:`Control + F`. On the left hand side of the window is a :guilabel:`Category` column and to choose functions from that category left click on the category name. To see a list of the actual function are under the :guilabel:`Function` column. To insert a function into the main window left click the :guilabel:`Insert` button. To calculate an answer in a popup left click the :guilabel:`Calculate` button. To search for a function type in the magnifying glass field. To save a function in your favorites check the :guilabel:`Favorite` checkbox. To bring up an extensive list of functions left click the :guilabel:`fx` button or press :kbd:`Control + F`. On the left hand side of the window is a :guilabel:`Category` column and to choose functions from that category left click on the category name. To see a list of the actual function are under the :guilabel:`Function` column. To insert a function into the main window left click the :guilabel:`Insert` button. To calculate an answer in a popup left click the :guilabel:`Calculate` button. To search for a function type in the magnifying glass field. To save a function in your favorites check the :guilabel:`Favorite` checkbox.
.. image:: qalculate-functions.png .. image:: qalculate-functions.png
Units
-----
To have a large list of many different units you can open by pressing :kbd:`control +U` or left click on the :guilabel:`ruler` button. Under the left column labeled :guilabel:`Category` and left click on a category to select that category of unit. To search for a unit type in the :guilabel:`Magnifying glass` button. To select a unit left click on it on the right column. To insert the unit left click on the :guilabel:`Insert` button. To add a unit to your favorites check the :guilabel:`Favorite` checkbox. To convert between units enter the number in the bottom of the window and then type how many units to convert from in the second from the bottom field and then select the bottom right field what to convert to will show the converted result. To have a large list of many different units you can open by pressing :kbd:`control +U` or left click on the :guilabel:`ruler` button. Under the left column labeled :guilabel:`Category` and left click on a category to select that category of unit. To search for a unit type in the :guilabel:`Magnifying glass` button. To select a unit left click on it on the right column. To insert the unit left click on the :guilabel:`Insert` button. To add a unit to your favorites check the :guilabel:`Favorite` checkbox. To convert between units enter the number in the bottom of the window and then type how many units to convert from in the second from the bottom field and then select the bottom right field what to convert to will show the converted result.
.. image:: qalculate-units.png .. image:: qalculate-units.png
Qalculate also does many operations with fractions. To input 1/2 into something you can middle click on the :guilabel:`2` button. Similarly to input 1/3 middle click on :guilabel:`3` and for 1/4 middle click on :guilabel:`4` and so on. Qalculate will also simplify fractions if you type them in so if you type in 4/16 Qalculate! will reduce it to 1/4 and then also provide a decimal answer with a :guilabel:`=` sign for an exact value or an :guilabel:`≈` for an approximate solution if not exact. Qalculate! will also let you add, subtract, multiply, divide, or more advanced fractions with fractions and still show the result as fractions. Qalculate also does many operations with fractions. To input 1/2 into something you can middle click on the :guilabel:`2` button. Similarly to input 1/3 middle click on :guilabel:`3` and for 1/4 middle click on :guilabel:`4` and so on. Qalculate will also simplify fractions if you type them in so if you type in 4/16 Qalculate! will reduce it to 1/4 and then also provide a decimal answer with a :guilabel:`=` sign for an exact value or an :guilabel:`≈` for an approximate solution if not exact. Qalculate! will also let you add, subtract, multiply, divide, or more advanced fractions with fractions and still show the result as fractions.
Plotting
--------
To plot functions in Qalculate! press :kbd:`Control + P` or left click on the :guilabel:`graph` button. The :guilabel:`Data` tab will have info on what you want values to plot. To give your name to a function to plot enter that in the :guilabel:`Title` field. Type what you want to plot in the :guilabel:`Expression` field. To change what each variable is called change the :guilabel:`X variable` field. To change what style to draw the plot change the :guilabel:`Style` drop down. To change how to smooth your plot use the :guilabel:`Smoothing` drop down. To add another function to be plotted left click the :guilabel:`Add` button. To have the plot redrawn with your changes left click the :guilabel:`Apply` button. To remove something you want to plot left click the :guilabel:`Remove` button. On the bottom of this window is a list of everything you have to plot. The title of what you are plotting is listed in the :guilabel:`Title` column. The formula for what you are plotting is in the :guilabel:`Expression` column. To plot functions in Qalculate! press :kbd:`Control + P` or left click on the :guilabel:`graph` button. The :guilabel:`Data` tab will have info on what you want values to plot. To give your name to a function to plot enter that in the :guilabel:`Title` field. Type what you want to plot in the :guilabel:`Expression` field. To change what each variable is called change the :guilabel:`X variable` field. To change what style to draw the plot change the :guilabel:`Style` drop down. To change how to smooth your plot use the :guilabel:`Smoothing` drop down. To add another function to be plotted left click the :guilabel:`Add` button. To have the plot redrawn with your changes left click the :guilabel:`Apply` button. To remove something you want to plot left click the :guilabel:`Remove` button. On the bottom of this window is a list of everything you have to plot. The title of what you are plotting is listed in the :guilabel:`Title` column. The formula for what you are plotting is in the :guilabel:`Expression` column.
.. image:: qalculate-plot-data.png .. image:: qalculate-plot-data.png
@ -41,6 +49,8 @@ The :guilabel:`Appearance` tab changes how the plot you make will appear. To hav
.. image:: qalculate-plot-result.png .. image:: qalculate-plot-result.png
Exponents and Roots
-------------------
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 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 logarithm left click on the :guilabel:`ln` button or type in :kbd:`ln()`. To take a logarithm on base 10 right click on the :guilabel:`ln()` button or type in :kbd:`log10()`. To take a logarithm with base n middle click on :guilabel:`ln` and then input your base. To take a natural logarithm left click on the :guilabel:`ln` button or type in :kbd:`ln()`. To take a logarithm on base 10 right click on the :guilabel:`ln()` button or type in :kbd:`log10()`. To take a logarithm with base n middle click on :guilabel:`ln` and then input your base.