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how to do tedious mathematical calculation with matlab

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Passband Modulation
it is really tedious, probably impossible, to do the following equation using a calculator. Please note that cosine and sine functions are in degrees
the result should b a scalar value if i am right?
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Walter Roberson
Walter Roberson 2012-10-5
I see you have changed the wording of your question a little, and given the note about degrees, but the equation itself isn't there yet ?
Passband Modulation
Passband Modulation 2012-10-5
sry, i just reuploaded the image, could you now see the equation?

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Walter Roberson
Walter Roberson 2012-10-5
k = 0:65119;
sum( cosd(3.6*k) .* sind(3.6*k) ).^2
  1 个评论
Passband Modulation
Passband Modulation 2012-10-5
cool, it really works. actually, i just manage to obtain the result using
function [S] = sum1(n)
S = 0; % Initialize sum to zero
k = 0; % Initialize index to zero
% loop for calculating summation
while k <= 65119
S = S + cos(3.6*k*pi/180)*sin(3.6*k*pi/180); % add to summation
k = k + 1; % increase the index
end
and then square the outcome, and get the answer as urs.
cool, urs looks tidier. many thx

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