Classic Calculus open-top box optimization scenario.[br]What size of square should you cut from each corner of a rectangle so that when the four sides are folded up, the resulting box has maximum volume?[br]Use the various controls to determine the size of the rectangle, the size of the cut corners, and the folding of the sides.[br]A graph may be displayed for the point and/or function curve for volume as a function of cut size.[br][br][b]Zoom:[/b] Pinch on touch screen, scroll wheel on mouse. Or click somewhere in the desired graphics view and then Ctrl/cmd + and Ctrl/cmd – on keyboard.[br][b]Scale individual axis:[/b] Pinch on x- or y-axis on touch screen, or hold Shift and click/drag on x- or y-axis.[br] "Values" box must be checked to do this in V(x) window.[br][b]Pan in 2D view:[/b] Click/touch and drag in an empty part of the x-y plane.[br][b]Rotate in 3D view:[/b] Click/touch and drag.[br][b]Fine control of slider:[/b] Click slider button, then use keyboard arrows to increment up/down. Hold Shift or Ctrl/cmd while doing this to scale increment down/up.[br][b]Full screen:[/b] Click/touch icon in lower-right corner of graphics view.[br]