# 3D Function Grapher

Plot an **f(x,y)** style function like x^2-y^2

Press "Edit" and try these:

- x^2-y^2
- -5*x*y*e^(-x^2-y^2)
- (sin(4*x)-cos(5*y))/5
- cos(abs(x)+abs(y))
- abs(x)-abs(y)
- (x^2+y^2)^0.5
- cos(x^2+y^2-0.5)-0.5

You can change "xMin", "xMax", "yMin" and "yMax" values, but at this stage the program is always c**entered on 0**.

The "xN" and "yN" control how many squares are plotted, go too low and it gets too chunky, go too high and the program really slows down and **uses up a lot** of your devices resources!

Also try changing the "zFact" to make the z-height more or less **dramatic**.

## All Functions

### Operators

+ | Addition operator | |
---|---|---|

- | Subtraction operator | |

* | Multiplication operator | |

/ | Division operator | |

^ | Exponent (Power) operator |

### Functions

sqrt |
Square Root of a value or expression. | |
---|---|---|

sin |
sine of a value or expression | |

cos |
cosine of a value or expression | |

tan |
tangent of a value or expression | |

asin |
inverse sine (arcsine) of a value or expression | |

acos |
inverse cosine (arccos) of a value or expression | |

atan |
inverse tangent (arctangent) of a value or expression | |

sinh |
Hyperbolic sine (sinh) of a value or expression | |

cosh |
Hyperbolic cosine (cosh) of a value or expression | |

tanh |
Hyperbolic tangent (tanh) of a value or expression | |

exp |
e (the Euler Constant) raised to the power of a value or expression | |

ln |
The natural logarithm of a value or expression | |

log |
The base-10 logarithm of a value or expression | |

floor | Returns the largest (closest to positive infinity) value that is not greater than the argument and is equal to a mathematical integer. | |

ceil | Returns the smallest (closest to negative infinity) value that is not less than the argument and is equal to a mathematical integer. | |

round | Round to the nearest integer. Examples: round(-2.5) = -2, round(-0.1) = 0, round(0.1) = 0, round(2.5) = 3 | |

abs | Absolute value (distance from zero) of a value or expression | |

sign | Sign (+1 or -1) of a value or expression | |

### Constants

pi | The constant π (3.141592654...) | |
---|---|---|

e | Euler's number (2.71828...), the base for the natural logarithm |