KmPlot/Using Sliders/da: Difference between revisions
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Image:Kmplot_function_with_param.png|Input | Image:Kmplot_function_with_param.png|Input | ||
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Image:Kmplot_sliders.png| | Image:Kmplot_sliders.png|Skydervinduet | ||
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Revision as of 16:46, 13 October 2010
En vigtig funktion i KmPlot er at visualisere parametres betydning for en funktions graf.
Bevæg en sinuskurve
Lad os se, hvordan man kan bevæge en sinuskurve til venstre og højre:
- Lav et Cartesisk plot.
- Skriv ligningen
f(x,a) = sin(x-a)
- Markér tilvalget og vælg fra dropnedfeltet.
- For at gøre de tilgængelige skydere synlige, så vælg menuen
Nu kan du trække skyderen frem og tilbage og se, hvordan parameterværdien påvirker kurvens position.
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Input
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Menuen Vis skydere
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Skydervinduet
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 constant 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.