Q. E=[3−151] and A=[−23253−2]Let H=EA. Find H.H=
Matrix Product Calculation: To find the matrix product H=EA, we need to perform matrix multiplication. The matrix E is a 2×2 matrix, and matrix A is a 2×3 matrix. The resulting matrix H will be a 2×3 matrix. We will calculate the entries of H by taking the dot product of the rows of E with the columns of A.
Calculate H[1,1]: First, we calculate the entry in the first row and first column of H (H[1,1]). This is the dot product of the first row of E with the first column of A:H[1,1]=(3×−2)+(5×3)=−6+15=9.
Calculate H[1,2]: Next, we calculate the entry in the first row and second column of H (H[1,2]). This is the dot product of the first row of E with the second column of A:H[1,2]=(3×2)+(5×5)=6+25=31.
Calculate H[1,3]: Now, we calculate the entry in the first row and third column of H (H[1,3]). This is the dot product of the first row of E with the third column of A:H[1,3]=(3×3)+(5×−2)=9−10=−1.
Calculate H[2,1]: We move on to the second row and first column of H (H[2,1]). This is the dot product of the second row of E with the first column of A:H[2,1]=(−1×−2)+(1×3)=2+3=5.
Calculate H[2,2]: Next, we calculate the entry in the second row and second column of H (H[2,2]). This is the dot product of the second row of E with the second column of A:H[2,2]=(−1×2)+(1×5)=−2+5=3.
Calculate H[2,3]: Finally, we calculate the entry in the second row and third column of H (H[2,3]). This is the dot product of the second row of E with the third column of A:H[2,3]=(−1×3)+(1×−2)=−3−2=−5.
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