DescriptionPowerful scientific calculator and the most accurate graphing calculator for graphing functions (also in polar coordinate system). It also comes with complex numbers and differentiation (2nd order), and an easy-to-use converter.
In addition to calculating numeric expressions, e.g., 1 + 2^3sin(2π/5)* 3log(5)/2, this graphing calculator lets you generate a table of values for f(x).
You will also get the following additional features when upgrade to "Graphing Calculator +" (look for the link on this page or on the installed free graphing calculator).
* Solve equations of the form f(x) = 0 to find the x-intercepts of the graph of f(x), also called 'zeros' or 'roots' of f(x).
* Find the first and second order derivatives with a single click.
* Calculate the definite integral and the area under the graph of f(x) with one click.
* Work more conveniently with complex numbers.
If your expressions are incomplete or if you make a syntax error the = sign changes to ? mark, touching it displays an error message. This graphing calculator gives you a feedback precisely indicating the error.
In using this free version of the graphing calculator you can use any of the following in your expressions
* Basic algebraic operations
* Trigonometric functions and their inverses (RAD, DEG)
* Hyperbolic functions and their inverses
* Exponential and logarithmic functions
* Absolute value and step functions.
Type a function f(x) and press Graph. For convenience, the graphing calculator 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.
* Long press of ^ (power) sign: Appends the interval 'intvl=(' to the expression if it is not already appended. Long press of decimal point inserts comma to separate the end-points.
If you touch Polar on the upper right of the graphing area, the graphing calculator draws the graph of the function 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.
Long pressing the function keys sin, cos, log,... displays their graphs.
To avoid cluttering the screens of the smaller-sized devices with many small and difficult-to-operate buttons, most keys in this scientific/graphing calculator have been assigned a second functionality as described below.
* Long press of the back-space button x←: Clears the input box. Immediately after pressing it will display back the deleted expression. It can also be used to restore the keypad to its original state (if the keypad layout has changed) without deleting any character.
* Long press of right parenthesis: Surrounds the expression with parentheses, provided the expression is a valid expression and is not already enclosed with parentheses.
* Long press of any digit key: inserts the reciprocal of the digit enclosed with parentheses. (Long press of 1 inserts the imaginary unit i).
* Pressing the more button (1 or 2 times) on the right of the calculator, displays more functions which you can use in your expressions. Pressing it again will display the functions originally displayed.
* By pressing the check boxes on the bottom right of this scientific/graphing calculator, you can display the inverse trigonometric, hyperbolic and inverse hyperbolic functions. Note that, for example, asin stands for arc sin (or inverse of sine) and asinh stands for inverse of sinh (hyperbolic sine).
All of the above with more details are included in the built-in Instruction menu of this graphing calculator.