Electrical Code or Electrical Contractor: EF: Exhaust Fan: ELEV: Elevator: EM: Emergency: EMT: Electrical Metallic Tubing: EP: Emergency Power: EPO: Emergency Power Off (Button or Switch) EWC: Electric Water Cooler: F: Fuse: FA: Fire Alarm: FAA: Fire Alarm Annunciator: FLA: Full Load Amperes: FMC: Flexible Metal Conduit: G: Ground: GFCI, GFI: Ground Fault Circuit Interrupter: GND: Ground: GRMC
The hypergeometric distribution is used for sampling without replacement. The density of this distribution with parameters m, n and k (named Np, N-Np, and n, respectively in the reference below) is given by. p(x) = choose(m, x) choose(n, k-x) / choose(m+n, k) for x = 0, â¦, k.
Hyperbolic Functions. Hyperbolic functions are related to the unit hyperbola, given by x^2 - y^2 = 1, analogous to the way trigonometric functions are related to the unit circle. Both trigonometric and hyperbolic functions can be used to parameterize their respective unit conics. However, while the unit circle's central angle, the argument taken by trigonometric functions, is indeed what one might consider to be an angle in the usual meaning of the word, the hyperbolic angle taken by hyperbolic functions is perhaps less intuitively defined.