I agree. The history channel once upon a time fell in the 0.1% but now...ancient aliens and swamp people lol. The only documentaries I trust now are on science channel.
It's mentioned in the documentary about tesla on the history channel. The name of the documentary is "The History Channel-Modern Marvels:Nikola Tesla:Mad Electricity." Mind you they also air ancient aliens so much its as if they believe aliens were apart of everyday life in antiquity.
Homework Statement
find the laurent series of sin(2z)/(z^3) in [z]>0
Homework Equations
The Attempt at a Solution
I am completely confused. I can understand some of the examples given on laurent series, like using partial fractions and then finding geometric series. Do I rewrite...
all i want is a simple hint i don't want anyone to do the problem for me I just want a little help. just a little push in the right direction would be so helpful.
Homework Statement
write f(z)= (z+i)/(z^2+1) in the form w=u(x,y)+iv(x,y)
Homework Equations
The Attempt at a Solution
I tried using the conjugate and also expanding out algebraically but I can not seem to get the right answer. I know what the answer is...
Homework Statement
s2/((s2-1)(s-1)2)
Homework Equations
laplace tables
The Attempt at a Solution
I attempted the shifting method and also partial fraction method but efforts were fruitless
Someone hit some random combination of keys that locked up some of the keyboard. A few of them started working but there is still a couple that don't work. Does anyone know how to unlock these keys?:uhh:
oh yeah i know i put cos by accident, but that is the solution right? I arrived at this solution by a long trial and error method. any way to quickly get at it in general?
Homework Statement
y''+y=5cos(x)
Homework Equations
y=Acos(x)+Bsin(x)
e^ix=cos(x)+isin(x)
The Attempt at a Solution
I tried using compbinations of these equations to try and solve but i'm lost. Any suggestions would be greatly appreciated!
Homework Statement
I think this is a bernoulli equation in disguise
(y^7-6x)y'+y=0
Homework Equations
I'm having trouble putting it in the form of y'+P(x)y=Q(x)y^n
The Attempt at a Solution
I've tried to divide out (y^7-6x) as well as some other alebraic manipulation but i keep...
Homework Statement
draw the field lines of a simple hydrogen atom model. A case is given where a proton is surrounded by an electron cloud. Without getting into quantum mechanics how would represent the field lines of this mini sphere inside and out.
Homework Equations
gauss's law
The...
Homework Statement
Revolve the region bounded by x=0, x=1, y=0 and y=x^5 about the y axis use shells to find the volume
I know how to set up the integral I just don't know where i'm integrating from. Is it from 0 to 1?
Homework Statement
A hollow spherical conducting shell has a uniformly distributed total surface charge density of -15\muC/m^2. It's outer surface has a radius R1=0.25m. Its inner radius is R2=0.15 m. A point charge, Q= -6.0\muC, is placed at the center of the spherical charge. Determine the...
Yes, being a new user here I lacked certain specifications that would indeed clarify the problem. When I said "material" I meant it to be infinitely thin, like a plane. And the material is perfectly malleable. And when I refer to "box/cube", I mean it must have all equal faces or sides. I didn't...
[b]1. Homework Statement [/b
Determine whether the function D=A sin kx cos \omegat
is a solution of the wave equation.
Homework Equations
D=Asin (kx-\omegat)
The Attempt at a Solution
sorry completely lost please help
Homework Statement
Homework Equations
The...