Derivatives on HP 42S

08252018, 08:00 PM
Post: #17




RE: Derivatives on HP 42S
(08252018 07:03 PM)Albert Chan Wrote: seems this is trivial to implement. This sounds a bit like: this is left as an exercise to the dear reader. Quote:If x < 0 and y is odd integer, return (x) ^ (1/y), else x ^ (1/y) Unfortunately \(x=\Re[z]\) and \(y=\Im[z]\) aren't analytic functions. So anything based on these values isn't analytic as well. Quote:Just add the check straight into Fx This violates the precondition of this algorithm: the function must be analytical You might get away in this case but it won't work if a stationary point happens to be at the place where you stitch the functions together. Cheers Thomas 

« Next Oldest  Next Newest »

User(s) browsing this thread: 1 Guest(s)