# Sigma (Sum) Calculator

*Just type, and your answer comes up live. Example: "n^2"*

## What is Sigma?

This symbol (called Sigma) means "sum up" |

It is used like this:

Sigma is fun to use, and can do many clever things. Learn more at Sigma Notation.

You might also like to read the more advanced topic Partial Sums.

## All Functions

### Operators

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

- | Subtraction operator | |

* | Multiplication operator | |

/ | Division operator | |

^ | Power/Exponent/Index operator | |

() | Parentheses |

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

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

tanh |
Hyperbolic inverse tangent (arctangent) 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 | |

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

fact | the Factorial function! |

### Constants

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

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