This project uses @Paddle2See's calculator to calculate the values of the function specified and graph them using the pen onto the grid background (a grid square represents 1 unit). For example, if you enter x + 1, a 45º inclined line that crosses the vertical grey line 1 square above the horizontal grey line. Please note that, to use multiplications, one has to put the sign (e.g. f(x) = 2x is not valid, f(x) = 2*x should be used). It knows the usual math operators (operator precedence is applied): + Addition - Subtraction * Multiplication / Division ^ Raise to a power It also knows parenthesis () and the following functions: sqrt Square Root sin Sine cos Cosine tan Tangent asin Arcsine acos Arccosine atan Arctangent It knows a couple of constants as well: pi Pi e Euler's number phi Golden Ratio
