Plot2D will plot cartesian, polar and parametric functions. Enter your function in the provided box and click the draw button to plot. Click the sample functions box to select and plot some common functions.

The **cartesian** function is the default function and is entered without identification;

for example: 2*x^2 + 3 or 2*sin(x) + (1/2)*cos(x) . Note; cartesian functions are written as a function of x.

To enter a **polar** function enter the function with a leading identifier;

for example: *polar: sin(a/2)* where -2∏ ≤ a ≤ 2∏ is the polar range. Note; the function is written as a function of **a** (not x).

To enter a **parametric** function enter the function with a leading identifier;

for example: *para: x=t^2; y=sin(t)* . Note; the x and y functions are written as a function of **t**.

When creating or entering your own functions you may use the following constants, operators or mathematical functions.

- pi The constant pi (3.141592654...)
- e Euler's number (2.71828...), the base for the natural logarithm

- ^ Power operator
- / Division operator
- * Multiplication operator
- - Subtraction operator
- + Addition operator

- sqrt Square Root of a value or expression
- sin sine of a value or expression
- cos cosine of a value or expression
- tan tangent of a value or expression

- asin inverse sine (arcsine) of a value or expression
- acos inverse cosine (arccos) of a value or expression
- atan inverse tangent (arctangent) of a value or expression

- sinh Hyperbolic sine (sinh) of a value or expression
- cosh Hyperbolic cosine (cosh) of a value or expression
- tanh Hyperbolic tangent (tanh) of a value or expression

- exp e raised to the power of a value or expression, eg; exp(x/2) is equiavalent to e^(x/2)
- ln The natural logarithm of a value or expression
- log The base-10 logarithm of a value or expression

You may print the plot by performing a right mouse click on the area above the plot. From the displayed menu select * Print*.
This will display a print dialog from which you can send the contents of the web page to your printer.

You can also try the Windows version of Plot2D. This version has many more features. For example, the Windows version allows you to save the functions you enter and call them back again for later use. There is no limit to the number of functions or libraries of functions you can save and recall for plotting.

©John Di Stefano