【實用工具app】Graphing Calculator free|最夯免費app-綠色工廠好玩App

If you are looking for a graphing calculator with powerful features that is also easy-to-use on phones and tablets, this graphing calculator is designed for you. When using this calculator, you do not have to switch between different scientific and graphing calculators; both are integrated into one advanced calculator. In addition, you can type in any expression (function, parametric, or scattered points) without having to change the graphing mode. Moreover, it is designed to lead you to the required results with the least number of clicks.

Since Android devices come in many different sizes, this graphing calculator also provides an easy way to customize the user interface (including changing of font size) to fit your devices' screens perfectly.

You can use the following in your expressions

• Basic algebraic operations

• Power functions

• Trigonometric functions and their inverses (RAD, DEG)

• Hyperbolic functions and their inverses

• Exponential and logarithmic functions

• Factorial, the Gamma function Γ and Psi function Ψ.

• Absolute value and step functions.

This calculator also lets you calculate with expressions containing complex numbers in all forms, such as, (1+2i)^i+3sin(4-5i)∠(π/4). The result is given in standard, polar and other forms. (you can use i or j for the imaginary unit.)

Main features

• Graph combination of any number of of functions, parametric curves and point sets (scattered plot) with a single click using the Cartesian or polar coordinate systems.

• Curve fitting / least squares line: when plotting points, this graphing calculator is the only known graphing calculator that can also find and graph the polynomial of the least degree passing through all the points and also find and graph the best line that fits the points according to the Gauss' least squares criterion.

• Find all the x-intercepts of the graph of a function on an interval with a single click.

• Find the points of intersection of the graphs of two functions.

• Calculate symbolic derivatives of functions and parametric curves and graph the derivatives.

• Calculate definite integrals, area under (or enclosed by) and arc length of the graph of functions or parametric curves in both Cartesian and polar cases.

• Generate table of values.

• Choice of scientific, engineering and fixed point notations.

• Choice of background color for the calculator.

If your expression is incomplete or if you make a syntax error touch the ? mark; this intelligent graphing calculator gives you feedback by precisely indicating the error.

Syntax ( by examples)

The graphing calculator, for convenience, automatically appends a default interval to function and parametric expressions and graphs or does calculations over the interval. You can change the endpoints of the interval, of course.

• Function: f(x) = xsin(2x) intvl=(-∞, ∞). (You don't have to type in the interval 'intvl=(-∞, ∞)'; the graphing calculator appends it when you press the graph button.)

• Parametric: p(t) = 3cos(3t), 3sin(2t) intvl=(0, 2π). Note: enter x(t) and y(t) separated by a comma -- no enclosing parentheses around x(t), y(t).

• Point set: -1,2; 3,4/5; 6,7; Note: enter the point (x,y) as x,y;

The calculator also provides a very useful and intuitive units converter for converting units of mass, length, time and many more quantities.