Your friend has realized that a number of files on his computer have been given different names. Every time he reboots his system, filenames have changed. He believes that it is the work of a virus. Identify five (5) precautions he should have taken to prevent such an attack

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.

In my email i got a message it says a quick message and in message details on who its from its says nicole and under nicole is [email protected] -

1. which of the following is a search engine? a) mozilla firefox b)internet explorer c)google d)safari 2. which of the following statements is true? a) all search engines will provide the same results when you enter the same query. b) all search engines use the same amount of advertisements. c) some search engines are also browsers. d) search engines often provide different results, even when you enter the same query.