/!\ RUN IT IN TURBO MODE ! (Press Shift while clicking on the flag.) This program is made for studying quadratics. Click on "New" to study a quadratic. You can type it in any form, for example "5x²+4x-6" or "-2(1-x)²+1", and even "2x+5x+-(x*3)²*2". If you click on "New", it'll keep the previous quadratic and add a new. So if you want to replace a quadratic by another, click on "Clear all" to clean the graph and then on "New" to add a quadratic. You can move the graph with the arrow keys. You can change the zoom with the three tools.
If you want to find the roots of a quadratic, to see its curve, or to compare it with another quadratic, you've chosen the right project ! All the source code and the pictures were made by me.