Recent content by sinned4789

Homework Statement find the characteristic equation of a binomial variable with pmf p(x) =\frac{n!}{(n-k)!k!}*p^{k}*(1-p)^{n-k}Homework Equations characteristic equation I(t) = \sump(x)*e^{tk}The Attempt at a Solution I(t) = \sum\frac{n!}{(n-k)!k!}*(p^{k}*(1-p)^{-k}*e^{tk})*(1-p)^{n} i am...

Homework Statement specialize cauchy's formula to the case when z is the center of the circle and show that f(z) = (1/2\pi)\int f(z + re^(it)) dt integral limits are 0 to 2\pi Homework Equations cauchy's formula f(z) = (1/i2*pi) \int f(\zeta)/(\xi - z) d\zeta it is 2*pi not...

Homework Statement part 1) draw 3(R-hat) + 3(theta-hat) + 3(phi-hat) part 2) draw 3(r-hat) + 3(theta-hat) + 3(z-hat) Homework Equations The Attempt at a Solution aren't these the same thing? just 3 in each of the x, y, and z directions in cartesian coordinates.

bump, anyone?

Homework Statement find the transfer function H(s) [PLAIN]http://img192.imageshack.us/img192/4204/asdwoe.jpg Homework Equations H(s) = Vout/Vin done in the frequency domain so: C1 and C2 turns into 1/sC where C1 = C2 = .1F and R1 = R2 = 20 The Attempt at a Solution to find the...

Homework Statement the current through an element is i = 2t^2 - 1 Amps. if that element is a 4H inductor, what is the energy delivered to it from time t=1 to t=3. Homework Equations energy in an inductor is dw = Li di The Attempt at a Solution i = 2t^2 - 1 di = 4t dt w = L...