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jcalcf.m function [x,y,t,u,px,py,p] = jcalcf(X,Y,P) is a function version of jcalc, which allows arbitrary naming of variables.

function [x,y,t,u,px,py,p] = jcalcf(X,Y,P)% JCALCF [x,y,t,u,px,py,p] = jcalcf(X,Y,P) Function version of jcalc% Version of 5/3/95 % Allows arbitrary naming of variablesif sum(size(P) ~= [length(Y) length(X)])>0 error(' Incompatible vector sizes')end x = X;y = Y; p = P;px = sum(P); py = fliplr(sum(P'));[t,u] = meshgrid(X,fliplr(Y));
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jointzw.m Sets up joint distribution for Z = g ( X , Y ) and W = h ( X , Y ) and provides calculating matrices as in jcalc. Inputs are P , X , and Y as well as array expressions for g ( t , u ) and h ( t , u ) . Outputs are matrices Z , W , P Z W for the joint distribution, marginal probabilities P Z , P W , and the calculating matrices v , w .

% JOINTZW file jointzw.m Joint dbn for two functions of (X,Y) % Version of 4/29/97% Obtains joint distribution for % Z = g(X,Y) and W = h(X,Y)% Inputs P, X, and Y as well as array % expressions for g(t,u) and h(t,u)P = input('Enter joint prob for (X,Y) '); X = input('Enter values for X ');Y = input('Enter values for Y '); [t,u]= meshgrid(X,fliplr(Y)); G = input('Enter expression for g(t,u) ');H = input('Enter expression for h(t,u) '); [Z,PZ]= csort(G,P); [W,PW]= csort(H,P); r = length(W);c = length(Z); PZW = zeros(r,c);for i = 1:r for j = 1:ca = find((G==Z(j))&(H==W(i))); if ~isempty(a)PZW(i,j) = total(P(a)); endend endPZW = flipud(PZW); [v,w]= meshgrid(Z,fliplr(W)); if (G==t)&(H==u) disp(' ')disp(' Note: Z = X and W = Y') disp(' ')elseif G==t disp(' ')disp(' Note: Z = X') disp(' ')elseif H==u disp(' ')disp(' Note: W = Y') disp(' ')end disp('Use array operations on Z, W, PZ, PW, v, w, PZW')
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jdtest.m Tests a joint probability matrix P for negative entries and unit total probability..

function y = jdtest(P) % JDTEST y = jdtest(P) Tests P for unit total and negative elements% Version of 10/8/93 M = min(min(P));S = sum(sum(P));if M<0 y = 'Negative entries';elseif abs(1 - S)>1e-7 y = 'Probabilities do not sum to one';else y = 'P is a valid distribution';end
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Setup for general random variables

tappr.m Uses the density function to set up a discrete approximation to the distribution for absolutely continuous random variable X .

% TAPPR file tappr.m Discrete approximation to ac random variable % Version of 4/16/94% Sets up discrete approximation to distribution for % absolutely continuous random variable X% Density is entered as a function of t r = input('Enter matrix [a b]of x-range endpoints '); n = input('Enter number of x approximation points ');d = (r(2) - r(1))/n; t = (r(1):d:r(2)-d) +d/2;PX = input('Enter density as a function of t '); PX = PX*d;PX = PX/sum(PX); X = t;disp('Use row matrices X and PX as in the simple case')
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tuappr.m Uses the joint density to set up discrete approximations to X , Y , t , u , and density.

% TUAPPR file tuappr.m Discrete approximation to joint ac pair % Version of 2/20/96% Joint density entered as a function of t, u % Sets up discrete approximations to X, Y, t, u, and densityrx = input('Enter matrix [a b] of X-range endpoints ');ry = input('Enter matrix [c d] of Y-range endpoints ');nx = input('Enter number of X approximation points '); ny = input('Enter number of Y approximation points ');dx = (rx(2) - rx(1))/nx; dy = (ry(2) - ry(1))/ny;X = (rx(1):dx:rx(2)-dx) + dx/2; Y = (ry(1):dy:ry(2)-dy) + dy/2;[t,u] = meshgrid(X,fliplr(Y));P = input('Enter expression for joint density '); P = dx*dy*P;P = P/sum(sum(P)); PX = sum(P);PY = fliplr(sum(P')); disp('Use array operations on X, Y, PX, PY, t, u, and P')
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Questions & Answers

find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
okay, so you have 6 raised to the power of 2. what is that part of your answer
I don't understand what the A with approx sign and the boxed x mean
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
I'm not sure why it wrote it the other way
I got X =-6
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
oops. ignore that.
so you not have an equal sign anywhere in the original equation?
is it a question of log
Commplementary angles
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what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
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Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
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Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
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I'm interested in nanotube
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Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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A fair die is tossed 180 times. Find the probability P that the face 6 will appear between 29 and 32 times inclusive
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Source:  OpenStax, Applied probability. OpenStax CNX. Aug 31, 2009 Download for free at http://cnx.org/content/col10708/1.6
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