fnint vs normalcdf

bigal40

Senior member
Sep 7, 2004
849
0
0
I wrote a program on my calculator that integrates the area under the normal curve. THe user inputs mu sigma and the upper and lower bounds. I then learned that the normalcdf function does the same thing except it is faster and extremely low and high values can be used with out it giving an overflow error. How does the normalcdf function calculate the area? Is it just reading data from a chart?