Calculatrice 3D

A graph you can turn with your finger says more than a still picture. Drag to rotate the surface, pinch to grow it, tap a sheet to select it. A LAYOUT PER SCREEN On iPad, three columns: modules on the left, their settings in the middle, the graph on the right — and the calculator in its own window for anyone who wants it beside other work. On iPhone, the surface keeps the top of the screen and the modules scroll underneath, so you watch the sheet change while you adjust it. Held sideways, the phone splits the width rather than the height, and one button gives the graph the whole screen. WRITE IT AS YOU WOULD ON PAPER 2x, xy, (x+1)(x−1), |x|, √x, x², sin x: the parser takes handwritten notation, with no need for polite brackets. Polar coordinates r and θ are provided, and the variable t sets the surface in motion. READ THE SURFACE The probe goes wherever you want it, on the two sliders…