Could you please solve the problem??

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Lee Jae-yeon 2011-12-1

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https://ww2.mathworks.cn/matlabcentral/answers/22748-could-you-please-solve-the-problem

Hello,expert!!! I have learnt "Convolution in signal and system... I should make a source the following question>>>>>>> X[n]*h[n] = [20cos(5πn+ π/3)+cos(200πn)] * 1/3 ( δ[n-2]+ δ[n-1]+ δ[n] ) {n is from 0 to 299}>>>>>>>I should show cosine graph by matlab! How to make a source which calculate the question .for example,>>>> y[0] = 1/3[20cos(5π0+ π/3)+cos(200π0)].......... y[1] = 1/3[20cos(5π0+ π/3)+cos(200π0)]+1/3[20cos(5π1+ π/3)+cos(200π1)]..........y[2] = 1/3[20cos(5π0+ π/3)+cos(200π0)]+1/3[20cos(5π1+ π/3)+cos(200π1)]+1/3[20cos(5π2+ π/3)+cos(200π2)]..........y[3] = 1/3[20cos(5π1+ π/3)+cos(200π1)]+1/3[20cos(5π2+ π/3)+cos(200π2)]+1/3[20cos(5π3+ π/3)+cos(200π3)]........ until y[301] = 1/3[20cos(5π299+ π/3)+cos(200π299)] δ[n] is the backward shift operator 5π(n-2) is 5*pi(n-2)*** This question cannot be used 'Filter'utility in Matlab....How to creat matlab source,expert???? Help me please!!!!