Polar and parametric curves

November 12, 2019

In the **Functions**, you can now plot polar and paramteric curves.

Select the name of the function and press ** OK** to choose the type of curve you want to plot.

For a polar curve, enter an expression containing the character `θ`

using the ** x,n,t** key of the calculator. Then plot your curve!

To define a parametric curve, use a 2x1 matrix. The character `t`

is also accessed using the ** x,n,t** key.

By default, the definition sets for polar and parametric types are `[0,2π]`

.

To change the plot interval, select the name of the function and go to the **Plot range** section.

By adjusting the plot range of functions, it is possible to draw piece-wise functions.

The calculations on the matrices are now exact!

You can work with a third sequence in the **Sequences** application.

Functions associated with **normal and binomial distributions** appear in the **Probabilities** section of the ** Toolbox** menu.

Three new probability distributions are available: the **chi-square**, the **Student (t)** and the **geometric** distributions.

Multiplication is now represented by a cross or omitted when possible.

- Added Engineering to the
**Result format**section of the**Settings**application. - Added gradians to the
**Angle measure**section of the**Settings**application. - Operations with
`floor`

,`ceil`

and`frac`

are now exact. - Upgrade to version 1.11 of MicroPython.

We would like to thank the contributors who helped develop this update: Alexandre André, Xavier Andréani, Jean-Baptiste Boric, Tiago Pires and Roman Wueest.