Does anyone familiar with a convenient way in Mathematica to define a case function such as:
y(x)=\left\{\begin{array}{c} x \\ -x\end{array}\begin{array}{c} x>0 \\ x<0\end{array}
\right.
?
Thankes,
Omri
Hallo,
I was wondering what is the physical significance of scalar field \Phi (x) as an quantum operator. \Phi (x) have canonical commutation relation such as [ \Phi (x) , \pi (x) ] so it must be an opertor, thus what are his eigenstates?
Thanks,
Omri
Hallo everyone,
I have a word document full of equations in Mathtype and I added a new equation which I wrote in different size and style. Does anyone know how I can change the old equations (not one by one) so their properties (size, style) would be exactly as those of the new equation...
I read to today that soap bubbles explodes due to surface tension regardless of
other forces experienced on the bubble.
how does surface tension does that? does it "drive" the bubble to go larger until it explodes?
Thanks,
Omri
Homework Statement
a rigid sphere of radius R and density \rho1 mooving (linearly) inside a liquid
of densiity \rho0 and viscosity constant \mu
the liquid is in hydrostatic equilibrium under gravitational field g.
what is the velocity of the sphere after a very long time assuming Raynolds...
hey,
i cant understand what is the motivation of defining pair of hole and electron as
a single particle, exciton. thus they seem to have distinct motion and space. so
why still we treat them as excitons?
Hallo everyone,
in electrostatic we have a linear realation between E D and P, i do understand that P
is related to the polaryzation density but what about E and D? which of those represent the
overall field?
Hallo,
I have matrices on my workpace and i need to take the first element from each one
and produce new vector. In other words, i have the matrices D1,D2,D3....D36 on my workspace and by using a For loop i want to generate a new vector:
d=[D1(1,1) D2(1,1)...D3(1,1)].
does anyone know...
Hallo,
I'm looking for a Random function in c++. i tried to use in the function rand()% but
it does not generate a truly uniformly distributed random number in the span (since my span is large. 100000*100000). in other word it dosent generate a random number in equal probabilty in lage...
thanks for ypur responde,
i understand what you are saying, but is there a loop or other command
that generate 3 vectors a_1, a_2, a_3 from the matrices A?
Hallo,
I have a 3*3 matrices in matlab:
A=[ 1 2 3; 4 5 6; 7 8 9];
and i wont to accept a vector from each colume in an easy way, i.e.
a1=1 2 3 , a2=4 5 6 , a3=7 8 9
so i tried to wrote:
for i=1:3
a_i=A(:,i);
end
but i only the last vector, a3=7 8 9...
if anyone have...
Hallo.
If we consider Rolle's Theorem:
"If f is continuous on [a, b], differentiable in
(a,b), and f (a) = f (b), then there exists a point c in (a, b) where f'(c) = 0."
Why do we need to state continuity of f in interval and differentiability of f in open segment? Why can't we say f...
Hallo,
Does the velocity i simple harmonic oscillator is zero in equilibrium points? if it's true
how does it make sense with the fact that i suppose to get a maximum kinetic
Energy in those points (stable ones)
i would realy appriciate if someone could clear this issue for me...
thank you for your comments,
I'm sorry but the statement (as i guess you already assume) was:
"The set Q has no interior points, and neither does its complement, R\Q"
thanks
Omri