Im new to MathCad and im trying to find the fourth roots of -16j. I typed this in exactly like this and mathcad said that I have to have the -16 in an array. Any help would be great thanks
Perhaps you could post the sheet with the problem. -16j is a perfectly valid number (pure imaginary) and does not need any arrays. I suspect that that is not exactly what you typed. Perhaps you have attempted to define j (not a good idea) and used multiplication (rather than a scale modifier). Can't really tell without the sheet with your error. __________________ � � � � Tom Gutman
The other worksheet is OK, but one more root can be found, and here a worksheet with plenty of confusion over angles, signs, trig identities, etc. The basic rule is that the root is a quantity that multiplied by itself n-times is found by dividing the angle by n, and extracting the n-th root of the amplitude.
