Using basic programming (for loops, while loops, and if statements), write two matlab functions, both taking as input:
- dimension n;
- n x n matrix a;
- n x n matrix b;
-n × 1 vector x.
have the first function compute abx through (ab)x and the second compute abx through a(bx). have both output:
- the number of flops used.
(a) print out or write out the first function.
(b) print out or write out the second function.
(c) apply both your functions to the case with random matrices and vectors for n = 100 and print out or write out the results. do the same for 200 x 200, 400 x 400, and 800 x 800. which approach of computing abx is faster?

Your task this week is to write a very simple spam classifier in python. it will classify messages as either spam (unwanted) or ham (wanted). the program will have a set of spam_words, words that are known to appear in spam messages. that set is included in the template file spam. pypreview the document. you will also define a spam threshold which reflects the allowed percentage of spam words in the message. you'll compute a 'spam indicator', which is the ratio of spam words to the total number of unique words in the message. if the spam indicator exceeds the spam threshold, the message is classified as spam. otherwise it is classified as ham. we'll assume that the spam threshold is a constant and has a value of 0.10. your program will prompt the user for a message and then will print the corresponding spam indicator with two decimal digits and the corresponding classification (spam or ham). the program will be case insensitive. the spam words are detected whether they are in lower case or upper case or mixed case. each word, spam or not, is counted once (even if it appears multiple times in the message.) the program will remove punctuation from the message before identifying the words and computing the spam indicator. for example '! ' must be identified as the spam word 'now'.

What are the possible consequences of computer hacking? what is computer piracy? describe some examples. what are the effects of computer piracy? what are the possible consequences of computer piracy? what is intentional virus setting? describe some examples. what are the effects of intentional virus setting? what are the possible consequences of intentional virus setting? what is invasion of privacy? describe some examples. what are the effects of invasion of privacy? what are the possible consequences of invasion of privacy? what is an acceptable use policy and what is the purpose of the acceptable use policy what is intellectual property and how can you use it?

Which of the following would not be considered a pc? a. mainframe b. desktop c. tablet pc d. laptop