Integrated scientific/graphing calculator with features found with no other graphing calculator.
*** This is NOT a demo. This graphing calculator graphs functions even using polar coordinate system. For more functionality an upgrade is required. ***
* Graph functions on an interval. Example: f(x) = xsin(2x) intvl=(-1/2, 3pi).
* Graph functions using Cartesian and polar coordinate systems.
* This graphing calculator is generally able to identify 'holes' in a graph and also draw the asymptotes separate from the graph with dashed lines.
* Graph up to 5 functions on the same Cartesian or polar coordinate system.
* Calculate complex numbers expressions. Example: (2+3i)^i+cis(4). You can use i or j for the imaginary unit.
* Calculate derivatives (symbolic) of functions and graph them.
* Solve f(x)= 0 to find all the x-intercepts (zeros or roots of a function) on an interval without any guesswork.
* Generate table of values for a function.
* Calculate definite integrals and areas.
* Degrees and Radians mode.
* Scientific, engineering and fixed point notations.
* Converter - convert units of length, mass, time,... .
* Change background color of the calculator.
****Some of the above features may require upgrade.
You can use the following in your expressions
* Basic algebraic operations
* Trigonometric functions and their inverses (RAD and DEG)
* Hyperbolic functions and their inverses
* Exponential and logarithmic functions
* Absolute value and step functions.
If your expression is incomplete or if you make a syntax error the = sign changes to ? mark. When you touch it, this artificial intelligent graphing calculator gives you a feedback by precisely indicating the error.
When no interval is specified, the graphing calculator automatically appends a default interval to the function expression and draws the graph on that interval. You can change the endpoints of the interval, of course. This convenient feature is unique to the gCalcD graphing calculator.
Touch Polar on the upper right of the graphing area to draw the graphs using the polar coordinate system.
Touch and drag the graphs to see the required region. To center the graph on the screen, touch the coordinate indicator on the top left of the graphing area.
Touch ++ or -- on the lower right corner of the graphing area to zoom in or zoom out.
Touch the lower left corner of the graphing area (where the caption is) to reset zoom.
On this graphing calculate most keys are assigned a second functionality by long pressing. For example
* Long press of the back-space button x←: Clears the input box. Immediately after pressing it will display back the deleted expression.
* Long press of ^ (power) sign: Appends the 'intvl=(' to the expression if it is not already appended or deleted. Long press of decimal point inserts comma to separate the end-points.
* Long press of any digit key: inserts the reciprocal of the digit enclosed with parentheses.
All of the above with more details are included in the built-in help menu of the calculator.
