# KmPlot/Using Sliders

Revision as of 17:29, 11 October 2010 by Pipesmoker (talk | contribs) (Marked this version for translation)

A main feature fo **KmPlot** is to visualize the influence of parameters to the curve of a function.

## Moving a Sinus Curve

Let's see, how to move a sinus curve left and right:

- Create a new cartesian plot.
- Enter the equation
f(x,a) = sin(x-a)

- Check the option and choose from the drop down list.
- To make the available sliders visible, check

Now you can move the slider and see how the parameter value modifies the position of the curve.

## Trajectory of a Projectile

Now let's have a look at the maximum distance of a projectile thrown with different angles. We use a parametric plot depending on an additional parameter which is the angle.

- Define a contant v_0 for the starting velocity.
- Create a new parametric plot
- Enter the equations
f_x(t,α) = v_0∙cos(α)∙t f_y(t,α) = 2+v_0∙sin(α)∙t−5∙t^2

- Check the option and choose from the drop down list.
- To make the available sliders visible, check

Now you can move the slider and see how the distance depends on the parameter value.

Content is available under Creative Commons License SA 4.0 unless otherwise noted.