please help

Q1, Given two vectors B[n]=[22875]. Amows show the zero point, so for A[n], the index n=[2,1,0,1,2,3,4] and for B[n], the index n=[1,0,1,2,3]. Calculate the C[n]=A[n]B[n]. Using either the numerical method or the table method, detailed steps must be provided. Then draw the discrete time series A[n]. B[n], and C[n]. For the A[n] and B[n]. calculate their cross-correlation D[n]. Plot D[n]. Calculate the autocorrelation of A[n] and B[n], and plot the results