FutureStarr

9 Calculator

# 9 Calculator

Just in case, below is a list of sites to compare your impressionable math skills to your pocket calculator:

### calculate

My root-rational-fraction program RRF was written to make it possible to calculate Wigner 3-j, 6-j and 9-j symbols exactly. These things appear in angular momentum theory, and can always be expressed as square roots of rational fractions. If you need to use them extensively, you might find the RRF program useful — you can download it and compile it on your own machine. However, if you only need occasional values, you can use this calculator, which uses the RRF program to evaluate individual coefficients. Just fill in the appropriate set of boxes below and push the button for the 3-j, 6-j or 9-j symbol that you need.

One formula that uses the TBSA that has been affected by burns is the parkland formula. This formula calculates the amount of fluids that a burn victim has to receive in the first 24 hours after sustaining burns. The formula is, Parkland formula= 4mL * weight in kilograms * %TBSA. This calculates the amount of fluids that a person needs in the first 24 hours after sustaining burns. (Source: www.learningaboutelectronics.com)

### Number

The Combinations Calculator will find the number of possible combinations that can be obtained by taking a sample of items from a larger set. Basically, it shows how many different possible subsets can be made from the larger set. For this calculator, the order of the items chosen in the subset does not matter.

A way of considering this is that each person in the group will make a total of n-1 handshakes. Since there are n people, there would be n times (n-1) total handshakes. In other words, the total number of people multiplied by the number of handshakes that each can make will be the total handshakes. A group of 3 would make a total of 3(3-1) = 3 * 2 = 6. Each person registers 2 handshakes with the other 2 people in the group; 3 * 2. (Source: www.calculatorsoup.com)

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