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found 2181 articles for 0.178 sec
How can the calculation time of the system matrix be reduced in this     

Author: lightnation
Date: Jan 7, 2008 08:42

...Theta], #] &, Complement[GenIndex, {SV}]], Map[Subscript[\[Theta], #] &, LoadIndex], Map[Subscript[V, #] &, LoadIndex..., #]) &, Complement[GenIndex, {SV}]] -> Map[ (BUSdat1[[#, 5]]) &, Complement[GenIndex, {SV}]]]; varcal0 = Flatten...]], -QD[[1]], 1, -0.1}, {5, 1, -PD[[2]], -QD[[2....0814153, Subscript[\[Theta], 4] -> -0.0386902, Subscript[\[Theta], 5] -> -0.0696178...
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Re: Phase shift with IFFT(FFT(X))     

Author: David
Date: Dec 18, 2007 12:19

.../N; t = (0:N-1)*dt; x = sin(t); plot(t,x,'ro-'); hold on X = fft(x); %% Phase shift theta = .5*dt; p = (0:(N-2)/2)*theta; P = [0 -fliplr(p) p]; XX = X.*(cos(P)+i*sin(P)); ... this works properly the result is purely real anyway. For clarity i also used smaller values to create theta, try running it with 0, .1, .2, .3, .4, etc and watch the ...
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Grapher 2.0 in 10.5     

Author: Guido Mocken
Date: Nov 6, 2007 11:01

..., würde der Atomphysiker in mir mal gerne Kugelflächenfunktionen plotten, d.h. z.B. r=|Y_2,1(theta, phi)|^2. Das kriege ich aber mit Grapher einfach nicht hin. Mit den assoziierten Legendre-Polynomen P_l^m... korrekten) Vorfaktor dasselbe wie P_l^m(cos(x)). In der Definition scheint also x die Rolle von theta zu spielen. Ist y eigentlich phi? Was ist mit m!=0 los? Kann jemand den Rest ...
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Re: Trig functions in mex     

Author: Andrew
Date: Nov 2, 2007 16:07

...> values to the C versions (using math.h from MSVC). For example: Theta = 2.19804934138903010 In the mex file: cos(Theta) = -5.86922898140130540e-001 And in Matlab: cos(Theta) = -5.86922898140130660e... sin to so I guess its not a case of one defining cos as sin(Theta + pi/2), they probably use a different number of terms in ...
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Re: Trig functions in mex     

Author: Philip Borghesani
Date: Nov 2, 2007 15:18

... values to the C versions (using math.h from MSVC). For example: Theta = 2.19804934138903010 In the mex file: cos(Theta) = -5.86922898140130540e-001 And in Matlab: cos(Theta) = -5.86922898140130660e-001 ... with sin to so I guess its not a case of one defining cos as sin(Theta + pi/2), they probably use a different number of terms in the ...
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Trig functions in mex     

Author: Andrew
Date: Nov 2, 2007 11:12

... C versions (using math.h from MSVC). For example: Theta = 2.19804934138903010 In the mex file: cos(Theta) = -5.86922898140130540e-001 And in Matlab: cos(Theta) = -5.86922898140130660e-001 Both results invert perfectly so its not really a case of one being right. It ... I guess its not a case of one defining cos as sin(Theta + pi/2), they probably use a different number ...
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Re: Browsing through random points     

Author: Paul E. Black
Date: Oct 4, 2007 18:37

... d. Points that are at an angle are penalized: say theta=30 degrees, so sin(theta)=.5, 1+2*sin(theta) ...with this formula to improve its "feel". Here are some parameters, (1+a*sin(theta))*d (increase a to increase the penalty for being "off center") (1+sin(theta)^... will probably combine parameters like this: (1+a*sin(b*theta)^c)*d You could try variations of 1/cos(theta) ...
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Re: the temperamental loop or something wrong with my expression     

Author: Jack Yu
Date: Aug 29, 2007 10:31

...[ 3\ \[Phi]] + 16\ Sin[\[Theta]]\^5\ Sin[ 5\ \[Phi]])\)\ f\^3...]] + 2\ Cos[ 6\ \[Phi]]\ Sin[\[Theta]]\^2 + \@3\ \((41\ Sin[ 2\...[FullSimplify[ComplexExpand[aET[f,8,5]]]]] Out[49]= {62.095294 Second,0}...
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Re: the temperamental loop or something wrong with my expression     

Author: DrMajorBob
Date: Aug 26, 2007 08:55

...Rule]x}]; In[2]:= conjSphericalHarmonicY[l_,m_,\[Theta]_,\[Phi]_]:= delconj[1+...Sin[ 3\ \[Phi]] + 16\ Sin[\[Theta]]\^5\ Sin[ 5\ \[Phi]])\)\ f\^3...Phi]] + 2\ Cos[ 6\ \[Phi]]\ Sin[\[Theta]]\^2 + \@3\ \((41\ Sin[ 2...
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the temperamental loop or something wrong with my expression     

Author: Jack Yu
Date: Aug 24, 2007 08:18

...[ 3\ \[Phi]] + 16\ Sin[\[Theta]]\^5\ Sin[ 5\ \[Phi]])\)\ f\^3...]] + 2\ Cos[ 6\ \[Phi]]\ Sin[\[Theta]]\^2 + \@3\ \((41\ Sin[ 2...]]]], Editable->False]\) aET(f,\[InvisibleSpace]5\[InvisibleSpace]0\[InvisibleSpace])=\[InvisibleSpace]\ 0...
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