windsylph

Name:
Mark Poscablo
School:
About:
Saved not by works, but by grace through faith in Christ Jesus.
http://goodpersontest.com
--
I'm that person you see prancing around, just because power walking won't cut it.
.
..
...
Haha, just kidding. I power walk. Around the grounds of Wesleyan Academy. Straight through Village East Ave. Passing by Gateway. Who knows, maybe I'd even end up at 12525 Jones Rd.
Oh, how in the world..
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Questions Asked
windsylph:
Group Title
Recurrence Relations: Can you use generating functions to solve the recurrence relation T(n) = 2T(n-1) + n ?
updated 2 years ago
2 replies
No Medals Yet
Mathematics
windsylph:
Group Title
Derivative of ((-1/6)e^(-3t)+(1/6))*u(t), where u(t) is the unit step function? #signals and systems
updated 2 years ago
5 replies
1 Medal
Mathematics
windsylph:
Group Title
Signals and Systems: Causality: Can someone please explain how y(t) = ((t-1)^3)x(t/2) is a causal system? I see no way how y(t) uses future …
updated 2 years ago
No Medals Yet
Mathematics
windsylph:
Group Title
Signals and Systems: Causality: Can someone please explain how y(t) = ((t-1)^3)x(t/2) is a causal system? I see no way how y(t) uses future …
updated 2 years ago
7 replies
1 Medal
Mathematics
windsylph:
Group Title
Signals and Systems: Graph Transformations: Suppose a signal x(t) looks like this: https://dl.dropbox.com/u/17638088/Capture.PNG. What does …
updated 2 years ago
3 replies
No Medals Yet
Mathematics
windsylph:
Group Title
MIPS/Assembly: What does this program do? I'm mainly concerned about the line that starts with lb.
li $t0, 0xabcd9876
sw $t0, 100($0)
…
updated 2 years ago
1 reply
No Medals Yet
Mathematics
windsylph:
Group Title
Discrete Math: Formal Languages: Suppose that A is a subset of V*, where V is an alphabet. Prove that if A = A^2, then the empty string is i…
updated 2 years ago
1 reply
No Medals Yet
Mathematics
windsylph:
Group Title
Discrete Math: Formal Languages: Suppose that A is a subset of V*, where V is an alphabet. Prove that if A = A^2, then the empty string is i…
updated 2 years ago
4 replies
No Medals Yet
Mathematics
windsylph:
Group Title
If A is a subset of C and B is also a subset of C, then is A union B a subset of C also (subset, not a proper subset)? Intuitively, I'd say …
updated 2 years ago
5 replies
1 Medal
Mathematics
windsylph:
Group Title
LaTeX: Is there a macro for the curly inequality (like the ones used to represent partial orders)?
updated 2 years ago
3 replies
1 Medal
Mathematics
windsylph:
Group Title
LaTeX: Is there a macro for the curly inequality (like the ones used to represent partial orders)?
updated 2 years ago
47 replies
2 Medals
Mathematics
windsylph:
Group Title
Let S be the set of all people in the world, a and b be people in S, and R be the relation given in each item below. Is (S,R) a partially or…
updated 2 years ago
22 replies
2 Medals
Mathematics
windsylph:
Group Title
Discrete Math: Relations: A round bracelet has three beads equidistant from each other. The top bead is red, the left lower bead is blue, an…
updated 2 years ago
No Medals Yet
Mathematics
windsylph:
Group Title
Discrete Math: Relations: A round bracelet has three beads equidistant from each other. The top bead is red, the left lower bead is blue, an…
updated 2 years ago
No Medals Yet
Mathematics
windsylph:
Group Title
Prove that if an ordered pair of ordered pairs ((a,b),(c,d)) has the property ad=bc, then this property is transitive, i.e. if another order…
updated 2 years ago
11 replies
1 Medal
Mathematics
windsylph:
Group Title
Find a solution to the sequence 2, 14, 86, 518, 3110, ... . In other words, find a closed form of the recursive function a_n = 6a_{n-1} + 2.
updated 2 years ago
3 replies
1 Medal
Mathematics
windsylph:
Group Title
In the Tower of Hanoi problem, suppose you have three pegs and n disks. How many different arrangements are there of the n disks on three pe…
updated 2 years ago
8 replies
2 Medals
Mathematics
windsylph:
Group Title
In the Tower of Hanoi problem, suppose you have three pegs and n disks. How many different arrangements are there of the n disks on three pe…
updated 2 years ago
No Medals Yet
Mathematics
windsylph:
Group Title
Take f_n as the nth Fibonacci number. What other ways can you express 5*f_{n+1}?
updated 2 years ago
No Medals Yet
Mathematics
windsylph:
Group Title
How many bit strings of length 10 contain exactly 5 bits equal to 1? Is it 2^10 - 2^5?
updated 2 years ago
12 replies
1 Medal
Mathematics
windsylph:
Group Title
Prove that the sum of n harmonic numbers H_1 + H_2 + ... + H_n = (n+1)H_n - n
updated 2 years ago
26 replies
2 Medals
Mathematics
windsylph:
Group Title
Discrete Math: Union from i = 1 to infinity of A_i where A_i = (0,i), that is, the set of real numbers x such that 0 < x < i? I answered {x …
updated 2 years ago
3 replies
3 Medals
Mathematics
windsylph:
Group Title
Logic/Discrete Math: Let x be a tool, and P(x) be the statement "an x is in excellent condition". How do you express "No tool is in excellen…
updated 2 years ago
6 replies
1 Medal
Mathematics
windsylph:
Group Title
Discrete Math: Determine whether the statement "for all x, P(x) is true if and only if Q(x) is true" and the statement "for all x, P(x) is t…
updated 2 years ago
4 replies
2 Medals
Mathematics
windsylph:
Group Title
ODE's/Elec Eng'g: The circuit elements in a strictly parallel RLC circuit are R = 312.5 Ohms, L = 50 mH, and C = 200 nF. The initial inducto…
updated 3 years ago
3 replies
No Medals Yet
Mathematics
windsylph:
Group Title
2nd Order Elec Circuits: For a strictly parallel RLC circuit with parameters R, L=275mH, and C=10nF, find the value of R that will yield a d…
updated 3 years ago
2 replies
2 Medals
Mathematics
windsylph:
Group Title
ODE's/Electrical Eng'g: Find v(t) for the RLC circuit in this picture: http://dl.dropbox.com/u/17638088/rlc%20overdamped.PNG given v(0+) = 1…
updated 3 years ago
10 replies
1 Medal
Mathematics
windsylph:
Group Title
How many bit strings of length 12 contain
a) exactly three 1s?
b) at most three 1s?
…
updated 3 years ago
13 replies
2 Medals
Mathematics
windsylph:
Group Title
How many numbers must be selected from the set
{1, 3, 5, 7, 9, 11, 13, 15} to guarantee that at least one pair
of these numbers add up to …
updated 3 years ago
2 replies
1 Medal
Mathematics
windsylph:
Group Title
How many strings of eight uppercase English letters are there that start with X, if no letter can be repeated?
updated 3 years ago
8 replies
1 Medal
Mathematics
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