If any of the calculators is not shown fully, you may need to use your browser's options to zoom in so that the whole calculator could fit in.
This program was originally written for Windows platform. On Mac and other operating systems, depending on versions and/or browsers, the various colours on the colour box at the bottom of the graphing calculator may not show. Also you may have to double click on the coordinate plane if a button does not function as intended.
If you are using Mac or other operating system that use double buffering to display graphics, the animation option will not work. In these cases select none for Animation to save graphing time.
Graphing Calculator Online | gCalcD
Avoid pressing Enter on the keyboard after typing in function expressions. Otherwise you might get an unexpected error message.
If you have already pressed Enter, delete the new line, and make sure there are no invisible characters after the function expressions. Alternatively, add an extra right-paranthesis to the end of the function expressions.
Derivative & Partial Derivative Calculator
When solving linear systems, no result is displayed if the coefficient matrix is not a square matrix.
The text colors of the buttons for setting the dimension of matrices may be inconsistent.