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What are [tex]\( C_{12}, C_{31} \)[/tex], and [tex]\( C_{22} \)[/tex] of matrix [tex]\( C \)[/tex]?

[tex]\[
C = \left[\begin{array}{cc}
16 & 9 \\
-3 & 0 \\
4 & -10
\end{array}\right] + \left[\begin{array}{cc}
-0.5 & 0 \\
5 & 8 \\
-3 & 14
\end{array}\right]
\][/tex]

[tex]\( C_{12} = 9 \)[/tex]

[tex]\( C_{31} = 1 \)[/tex]

[tex]\( C_{22} = 8 \)[/tex]


Sagot :

Sure! Let's go through the process of adding the given matrices [tex]\( A \)[/tex] and [tex]\( B \)[/tex] to find the elements [tex]\( C_{12} \)[/tex], [tex]\( C_{31} \)[/tex], and [tex]\( C_{22} \)[/tex] of the resultant matrix [tex]\( C \)[/tex].

The matrices given are:

[tex]\[ A = \begin{bmatrix} 16 & 9 \\ -3 & 0 \\ 4 & -10 \end{bmatrix} \][/tex]

[tex]\[ B = \begin{bmatrix} -0.5 & 0 \\ 5 & 8 \\ -3 & 14 \end{bmatrix} \][/tex]

To find matrix [tex]\( C \)[/tex], we add the corresponding elements of matrices [tex]\( A \)[/tex] and [tex]\( B \)[/tex].

[tex]\[ C = A + B = \begin{bmatrix} 16 & 9 \\ -3 & 0 \\ 4 & -10 \end{bmatrix} + \begin{bmatrix} -0.5 & 0 \\ 5 & 8 \\ -3 & 14 \end{bmatrix} \][/tex]

Perform the element-wise addition:

[tex]\[ C = \begin{bmatrix} 16 + (-0.5) & 9 + 0 \\ -3 + 5 & 0 + 8 \\ 4 + (-3) & -10 + 14 \end{bmatrix} \][/tex]

Calculate each element:

[tex]\[ C = \begin{bmatrix} 15.5 & 9 \\ 2 & 8 \\ 1 & 4 \end{bmatrix} \][/tex]

Now, the elements we need are:
- [tex]\( C_{12} \)[/tex] (element in the first row, second column)
- [tex]\( C_{31} \)[/tex] (element in the third row, first column)
- [tex]\( C_{22} \)[/tex] (element in the second row, second column)

Extracting these elements from matrix [tex]\( C \)[/tex]:

- [tex]\( C_{12} = 9 \)[/tex]
- [tex]\( C_{31} = 1 \)[/tex]
- [tex]\( C_{22} = 8 \)[/tex]

Thus, the values are:

[tex]\[ C_{12} = 9 \][/tex]
[tex]\[ C_{31} = 1 \][/tex]
[tex]\[ C_{22} = 8 \][/tex]

The correct choices are:
[tex]\[ c_{12} = 9 \][/tex]
[tex]\[ c_{31} = 1 \][/tex]
[tex]\[ c_{22} = 8 \][/tex]

So the result from running the code correctly gives us the answer [tex]\( c_{12} = 9 \)[/tex], [tex]\( c_{31} = 1 \)[/tex], and [tex]\( c_{22} = 8 \)[/tex].