Recent content by audifanatic51

Ok, you you're basically saying that there really isn't a "first" card since that "first card" can be at the top, end, or somewhere in the middle since order doesn't matter?

Hi, I'm a bit thick-headed I guess and I cannot seem to figure out why my answer to this question is wrong. I need to figure out the number of ways to obtain a straight in a deck of 52 cards (I do not need to ignore straight-flushes or royal flushes). Note: a hand of 5 cards is used My...

ok, thanks

Now is there any way to simplify that even further, like get rid of the summation?

I must've been mixing myself up with a plot from the book. Anyway, now that I have the Laplace transform of u(t-a), then is the answer I'm looking for the summation of that Laplace transform times (-1)^n from 0 to infinity?

Well isn't a step function minus another step function zero (1-1=0)? so I need to subtract it by another step function, 2u(t-n), to make it reach -1. And the laplace transform of u(t-a) = e^(-as)/s

Hi, I recently posted another question about a Laplace transform and now have a question about taking the inverse Laplace transform. Again, my professor did not cover this topic as well as I could have hoped for, and so I am stuck on this problem as well. Again, I understand the idea of Laplace...

Right, I've done that already, but how do I get the Laplace transform from the graph? My graph starts at 1 when n=0, drops to -1 a n=1, goes to 1 at n=2, -1 at n=3, etc. So the series I computed from that was u(t)-2u(t-1)+2u(t-2)-2u(t-3)+2u(t-4)... But now what?

Hi, I've been asked to find the Laplace transform of a function and I have not the slightest clue where to begin. My professor derived the basic Laplace transforms in class(sin, cos, delta function, step function, etc), all of which I understood perfectly. However, he never really gave us an...

Hi, I am working on a prelab for my electronics laboratory course. It's really simple (or at least should be. Basically he wants us to simulate the I-V characteristics of a D1N4002 diode. There is no resistor in the circuit we are to simulate (basically we're shorting it if you consider the...