# Search Results for “parameter”

##### Parabola Parametrization

Investigate the characteristics of the standard parametrization of a parabola.##### parabola envelope

We use a trick to let the trace "open up" as you drag a point. The trick is this: an initial point is given parametric location s*t, create a tangent at this point and its envelope as s varies. Now hide the original point and create another point with parameter t, and make it draggable. Dragging the new point changes the value of t and we see a trace from 0 to t.##### Spline Approximation

Spline approximation to a quarter unit circle. Can you find the best value for parameter**a**?