a. Mathematics A number or symbol, often written as a subscript or superscript to a mathematical expression, that indicates an operation to be performed, an ordering relation, or a use of the associated expression.
b. A number derived from a formula, used to characterize a set of data.
See the related lonk for verification.
It's the number power.
helpful
23 x 67 = 536
The power or index. Strangely, it even works with numbers which are not math numbers!
if you want to do on your own look in you math book reciprocals in the index you will find fast but , depends on what kind of math book you have .
You do indicies by multiplying the big number by itself the number of times the index is. for example, if you had 2 2 (2 being the index) it would be 2x2, 4. But if it is 2 3 (3 being the index) it would be 2x2x2, 8.
Calculating dose of medicine, finding body mass index, statistics.
BMI = Mass÷Height2 For more information, search Wikipedia.org for Body Mass Index
Index form in math means exponents. For example: 2x2x2x2x2x2 will be changed to 2 to the 6th power (2 with the little 6 on the top right.) Hope i helped.☺♥
This might answer your question: http://answers.yahoo.com/question/index?qid=20070929201221AAN2qPA
uses of index
The Miller index is a notation system for lattice structure in crystallography. By convention, a negative number isn't represented the same way as a negative integer in math (like "-3" for instance.) Instead, the negative sign simply goes above the integer, as a small bar.
The possessive form of "index" is "index's." For example, "the index's values are displayed in alphabetical order."