tetrahedral number
, where n is a positive integer. This number equals the sum of the first n triangular numbers.
First four tetrahedral numbers
The first few tetrahedral numbers are 1, 4, 10, and 20, and the reason for the name can be seen from the figure.
- expected monetary value
- expected utility
- expected value
- experiment
- experimental design
- explanatory variable
- explementary angles
- explicit function
- exploratory data analysis
- exponent
- exponential decay
- exponential distribution
- exponential function
- exponential function to base a
- exponential growth
- exponential of a matrix
- exponential series
- exponentiate
- express
- extended complex plane
- extended mean value theorem
- extended metric
- extended real numbers
- extension
- exterior