Information below taken from [url=https://en.wikipedia.org/wiki/Seashell_surface]this Wikipedia article[/url]. [br][br][b][color=#1e84cc]To explore in Augmented Reality, see the directions at the bottom of this page. [/color][/b]

[b]Note: [/b][br][br]In the applet below, we use the coefficient [i]k[/i] = 2 instead of [math]\frac{5}{4}[/math] in all the surface equations. [br][br][b]How does changing the value of [i]k[/i] affect the overall surface? [/b]

1) Open up GeoGebra 3D app on your device. [br][br]2) Go to MENU, OPEN. Under SEARCH, type the resource id (in URL above): [b]hsusydws[/b][br][br]3) The four sliders you see are at the top of the algebra view.