![]() ![]() when I do the function -1^(1/3) I get -1. shouldn't I get the same result for X^(1/3) and cuberoot(X)?.Īlso also. numbers if I am using odd number roots.Īlso. ![]() I do not want any non-real results, nor should I get any. I tried changing this option, but I had the same results. Unfortunate that rather then viewing that as a teaching moment they just want an error. This was specifically put in there because so many educators don't want sqrt(-1) to return complex results too early. Try turning on the "allow complex result from real input" setting in your Home Settings screen. Quote:and written as programs) and evaluate it for the value of "-1" and for 2 matrices, one with a -1 in the first position, the other with 1 in the first position. I was unable to find this option, but I only want real number solutions. The heritage from the HP side is that the power will give the primary branch as stated, while the NTHROOT will return the real solution only. (03-31-2015 01:02 AM)Tim Wessman Wrote: (03-30-2015 10:03 PM)B1nary0 Wrote: I'm not sure why it evaluates these two expressions differently, my TI-nSpire handles it correctlyĬhange the domain from "real" to "rectangular/polar" and give is a look. I hope someone here has a little insight. I'm totally confused and feel like I can't rely on my HP Prime. Returns the same value for the matrix with all positive numbers, but returns an error when quirk=-1 or a matrix with a negative number in it Returns: 4, -0.51984209979, 0.412598948032 (ALL CORRECT!!! WTF)Īnd returns the same values as the previous expression for the other two values of quirk ![]() To explore a little further, I wrote two programs, the first, testeval: The expression is: (screenshot attached since I can't type it easily here) I will use the variable quirk to use in several forms of function (on the screen, and written as programs) and evaluate it for the value of "-1" and for 2 matrices, one with a -1 in the first position, the other with 1 in the first position. Issue #2: Incorrect result returned when passing a matrix containing a negative number to an expression. I'm not sure why it evaluates these two expressions differently, my TI-nSpire handles it correctly (either using the NTHROOT command, or using the NTHROOT symbol to get the cube root in textbook entry mode) When I graph the same function using this form: #Issues with ti nspire software log being huge how tobut I have been getting some very strange and inconsistent results out of my HP prime, and I would like to see if anyone can help me figure out why (or at least how to work around the issues). First off, I am not a calculator, nor math buff. ![]()
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