Given an n × n matrix a, write a function that carries out lu factoriza- tion without row pivoting. Note that this will be different from the built-in matlab function lu, which does do row pivoting.

3. solve the given inequality and graph the solution on a number line.

This question awards 100 ! i really don’t want to fail i will also mark you !

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?