Which focus is part of the discipline of information systems but not part of the discipline of information technology

The forerunner to cell phones, pdas, and smartphones was

Least square fit to polynomial write a function leastsquarefit3pol that solves a linear system of equations to find a least squares fit of a third order polynomial to an experimental data set given as two row arrays. the function leastsquarefit3pol must explicitly solve a set of linear equations and cannot use polyfit. there should be no restriction on the size of the problem that can be solved.

Negative methods of behavior correction include all but this: sarcasm verbal abuse setting an example for proper behavior humiliation