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t=-10:0.001:10
x=sinc(t);
subplot(321)
plot(t,x)
title 'orignal sinc wave'
%x(-t)
a=sinc(-t);
subplot(322)
plot(t,a)
title 'negative'
b=(x+a)*1/2;
subplot(323)
plot(t,b)
title 'even part of the signal'
c=(x-a)*1/2;
subplot(324)
plot(t,c)
title 'odd part of the signal'
d=c+b;
subplot(325)
plot(t,d)
sinc(t) is a symmetric function, so x=sinc(t)=sinc(-t)=a, thus, your panel 4, c=(x-a)*1/2 yields exactly 0 for all t values.
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syms k
S1 = symsum(1/((2*k)+1)^2,k,0,1000)
The result is this
59039372973827482202940226722672826425297321906316082356858983822169051832268260251807527611479190413293513875429587706186073872918905490907386679472102966658686481651660967093301512141946288248492833396616338323741632085379508599235923841007033467883638349122388806376761808189104503262045883240287482992169819848342303098664924237976221795758421152603069387903705445513260596627332283139648508194960733619500093010571517561429904500013876585156927070119332440687162376758374919870699278800835146651318465663183182583101377584105366558079836223068786457324044080570317649838092783113721959819118571747662368360095513856052974454509201490370810246175872510881504730747209788019551000695511879992198550955686739483474761130248789609061549535677663474218135370195381615899214931316241080337028498241295985409686314819267606796712968280842464845294917738460317179001491697993067157425958639996885239616893392960282441289069600101430806922004624472226999315951355963789249300352610312601262349650287009275097201871774652260892220551489305368617001974326978428202443548923140478853569492070442010110016068635424791389124439271253578545895132216218268847919848655110002938693346760862649668457282775860633067627110099340660770861888592018701206483696615682617062811616008107086256694453990688805738127607846586853460003073465075155412119309273843527076321601670400373937698518621100907936577387919537592519265365346619712200304996044229704602647674114176291753575322917531444831938509001759491229575945273985556769609288625450013634760596805884195325794441020339210402987018058377081579351119704065092777310976461961832919116412535470810011337916688085616171422473409544885864650134157327448050685723673514545806331081542320899927
It is a number in this form a/b
Why is this happening??
Do you know how to do this in octave too?
k = (0:1000);
k_sum = sum(1./((2*k)+1).^2);
disp(k_sum)
It's interesting that you jumped straight to using syms when the basic matlab functions work perfectly well for this problem. Why is that?
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I have simulink block which has thousands of input signal for example which contains a text TRXA
AIM1_Freshness_TRXA_FCC,
AIM2_Freshness_TRXA_FCC
I need to create exact replica of the model only change is TRXA is changed to TRXB
AIM1_Freshness_TRXB_FCC ,
AIM2_Freshness_TRXB_FCC
Any easy or matlab script to do that
Does the following help?
open_system('your_model')
x = find_system('RegExp','on','FindAll','on','Name','TRXA');
for idx=1:size(x,1)
name_orig = get_param(x(idx),'Name');
set_param(x(idx),'Name',strrep(name_orig,'TRXA','TRXB'));
end
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I have been trying for a while to get this to work but I don't seem to be getting any closer to a solution.
I'm not sure of what the pattern is and what to write for the "d" value in a:d:b
Clearly you want to start from 0 (a) and go to 2*pi (b).
Now the question comes what is your step size (d)?
From your example you can see that you are changing from 0 to pi/n.
And from pi/n to 2*pi/n.
This means your step size is d=pi/n
Once you defined your n, e.g:
n=10;
you can do the rest like this:
x=0:(pi/n):(2*pi)
y=sin(x);
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I want to know is it possible to make multidisciplinary function handle in MATLAB and if possible, how can I do this.
I assume you mean a "multivariate function" since a "multidisciplinary function" is completely non-nonsensical.
f=#(x,y)x+y
f(3,2)
ans =
5
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How do you solve this equation in Matlab?
beta=0:10:90
sin(tetha)+(3*cos(tetha)-1)*cot(beta)=0
Solve for tetha
I used the solve function but didn't get any answer.
Check out fzero.
beta = 0:10:90
for ii = 1:numel(beta)
%% insert fzero function here
end
Columns 1 through 7
-0.9273 0.8777 -0.6248 -0.2930 0.8045 -0.9177 0.9141
Columns 8 through 10
-0.7869 0.2148 0.6605