Sigma (Sum) Calculator
Just type, and your answer comes up live. Example: "n^2"
images/sigma2.js
What's Sigma?
| Σ | This symbol (called Sigma) means "sum up" |
It is used like this:
Example: to add the numbers from 1 to 4:
4
Σ
n=1
n = 1+2+3+4 = 10
With the values placed 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
^
Exponent (Power) operator
()
Parentheses (brackets)
Functions
sqrt
sin
cos
Cosine
tan
Tangent
asin
Inverse sine (arcsine)
acos
Inverse cosine (arccos)
atan
Inverse tangent (arctangent)
sinh
Hyperbolic sine
cosh
Hyperbolic cosine
tanh
Hyperbolic tangent
ln
The natural logarithm
log
The base-10 logarithm
abs
Absolute value (distance from zero)
sign
1 for positive, −1 for negative, and 0 for zero
round
round to nearest integer
largest integer not greater than the input value
smallest integer not less than the input value
fact
factorial function