3 dimensional view of basic quadric surfaces[br][br]Check a box to view a quadric surface and its equation.[br][br]The view can be rotated and translated, see [url=https://wiki.geogebra.orgen/3D_Graphics_View]GeoGebra Manual 3D View[/url] ( scroll down to [size=150]Display of Mathematical Objects[/size])[br][br]The sliders can be used to vary the coefficients. Note: for Hyperbolic Paraboloid [math]c=0.1[/math] works best.