Finite Fourier Transform on a 2d wave
How does the finite fourier transform work exactly?
The transform of f(x) is
\widetilde{f}(\lambda_{n}) =\int^{L}_{0} f(x) X_{n} dx
If I had a 3d wave equation pde and I applied Finite fourier transform on the pde for
z(x,y,t)=X(x)Y(y)T(t)...
1. Homework Statement [/prove f(x1,y1)-f(x0,y0)=fx(x*,y*)(x1-x0)+fy(x*,y*)(y1-y0)
prove there exists a point (x*,y*)
if fx and fy are all continuous on a circular region and contain A(x0,y0) and B(x1,y1)
2. Homework Equations
[b]3. The Attempt at a Solution
I'm thinking mean value...
I know that, and it's not really my question unless I misunderstand the applications of what you just said.
My question pertains to the visible nature of it.
I'm having a hard time visualising them.
How do you plot vector fields
How do you plot spanning sets?
How do you tell if something spans a plane, 3d, a line or more dimensions.
Javascript is in an external file liked by this:
<script type="text/javascript" src="myscript.js"></script>
in the head tag
i have
<form name="myform" action="" method="POST" onSumbit="return validateForms()">
and some form stuff and then:
<input type="submit" value="Submit"...
1. Homework Statement
F(x,y,z)=0
x=a(y,z)
y=b(x,z)
z=c(x,y)
what does
\frac{\partial c}{\partial x} \frac{\partial b}{\partial z} \frac{\partial a}{\partial y} equal.
2. Homework Equations
maybe you could tell me?
3. The Attempt at a Solution
i've spent hours and hours...
(\frac{\partial z}{\partial x})y
the small y, what does it mean.
the context this is used in is F(x,y,z) where each variable is a function of the other 2 variables.
1. Homework Statement
z=1-x^2-2y^2
find volume under curve
bounded by the xy plane.
is the answer sheet wrong? (see below)
why am i struggling so much with this??!?!?! how do i do it?
2. Homework Equations
according to other answer sheet, it is pi/sqrt 2
3. The Attempt at a...
1. Homework Statement
prove 0u=0 where u is in the vector space.
2. Homework Equations
the 10 various axioms for addition and scalar multiplication.
3. The Attempt at a Solution
pretty much just
(u+-u)u=0
or
(1-1)u=0
1u+-1u=0
and then i get stuck. i can prove that...
1. Homework Statement
In set theory, i have a two part question, the first is showing that the system S={set of all real numbers( \Re )}, #}
where a#b=a+b-ab
we have to show that it's not a group.
and then find what c is so that the system = { \Re \cap\overline{c}, # } is a group.
2. Homework...
Re: Why do some people think women "suck" at science and math?
i'm a female who studies BA of maths, ive always been good at maths and i actually think im rather good looking. tall, blonde, blue eyes, slender, etc i have guys falling for me quite a fair bit too. But i think theres this...
Can you give me 3-10 points why you believe in the theory of evolution and/or the big bang? this is independant of any other theories.
I'd like it numbered. and just brief points, like a topic and brief explanation of why this makes you believe evolution and/or the big bang to be true. I'll...
the context was talking about floating point numbers and catastrophic cancellation in the quadratic equation.
it said using 3 digit arithmetic:
*subs in some numbers, 0.2, 100.9 etc into the quad equation and at the end rounds the entire number to 3 digits*
am i right in assuming that...
RFID attendance marking, what infrastructure??
im trying to plan for an RFID system.
1)what resources and material and general infrastructure do i need?
2) i think i want it to connect it up to my Uni's intranet maybe wireless, so i'd only need to wire the power source? this good?
3)...
You should already have dumped the poor girl before you decided to look elsewhere.
as a girl id find that extremely unattractive. Id also refuse to date you because if I did, then youd be likely to look elsewhere while youre dating me.
How do you write error messages
for when a function has been given an input that is illogical for what the function does.
in matlab
function b = bla(a)
for example if a < 0
i want it to display a message
1. Homework Statement
romeo proposed to juliet. now hes waiting for her response.
R = 'event that she replies'
W='event that she wants to get married'
Mon = 'event on monday'
Tue = 'event on Tuesday'
P(R\wedgeMon | W) = 0.2
P(R\wedgeTue | W) = 0.25
P(R\wedgeMon| \bar{W}) = 0.05...
so i found this program matlab on the computers at uni. ive been messing around with it. right now im learning a bit about floating point systems and stuff and i thought it would be cool to write up a function that finds the smallest and largest numbers but turns out its harder than i first...
im trying to study but i have um misplaced my textbook. (it ran away from me, after i neglected it whilst doing other assesments)
so i would greatly appreciate just a couple questions with answers, (feel free to give me more though ;) )
on any of these things (in order of priority)
-...
thanks tiny-tim
hehe sorry, im pretty bad at that HallsofIvy.
and ummm no?? i dont think so... :S
does that in itself tell us that it is not parallel?
so... it is correct the way i did it? even if it perhaps wasn't the simplest?
Re: when integrating by trig substitution why do you use what you use??
sorry, how did you sub u into sinh(2u)
isnt that just sinh(2sinh^-1(x)?
how did you simplify?
hmm.
well, we're supposed to use the stuff we are learning about right now.
i was told by my teacher that i could use either dot or cross on the lines.
he did an example for an equation for a line with two variabkes (s and t) and found the normals (another equation with i,j and k in it...
1. Homework Statement
there is a line through A : (1;-2; 1) and B : (0; 2; 3)
and the line through C : (4; 1;-2) and D : (2; 2; 2)
are they parallel?
3. The Attempt at a Solution
i said no they weren't.
i had the lines as being:
(-t+1)i+(4t+2)j+(2t+1)k
and (-2t+4)i+(t+1)j+(4t-2)k...