Recent content by slug

its not possible simplify factorials is it? it tried but i just end up with long polynomials :confused:

is there a formula to solve a long series of addition of say 18 through 10748 instead of doing the tedious summing of 18+19+20+...+10748 there probably is but i found a formula yesterday and I want see if it is the same how about multiplication - is there an easy way of computing 97...

need help compute the laplace transform of h(t)= -5t^2 I took the integral((-5t^2)e^-(st)) i forgot integration by parts so i did it the hard way in my head and finally got lim t -> oo 5[(-1/s)(t^2)(e^-st) - (2te^-st) - (2se^-st)] 0--oo i got 10s but the book says -10/s^3 did i get the...

I'm having trouble understanding the concept of laplace transformations. my book states that it is comparing how much a function y(t) is like a standard function. what exactly does the answer mean such as y(s)=1/(s-2) is this the differnence between the functions depending on the value of s...

I saw this problem in a book review, but it doesn't give an answer If there is a 75% chance I will go out and eat dinner at a restaurant on Friday night and there is 45% chance I will go see a movie on friday night then what is the probability that I see a movie and eat dinner at a...

I don't know anything about probability but I would like to and I just had a thought. If there were 100 students then the chance of 8 students being in that category would be 100% no? However, the chances of 7 students or 9 would being in that category would be lass than 100%. So their is a...