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question 3 points 1 find \\(-f\\) for the given matrix. \\(f = \\begin{…

Question

question 3 points 1

find \\(-f\\) for the given matrix.

\\(f = \

$$\begin{bmatrix} 20 & -6 & -42 & 22 \\end{bmatrix}$$

\\)

\\(\bigcirc \

$$\begin{bmatrix} -20 & 6 & 42 & -22 \\end{bmatrix}$$

\\)

\\(\bigcirc \

$$\begin{bmatrix} -10 & 6 & 22 & -12 \\end{bmatrix}$$

\\)

Explanation:

Response

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
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"multiple_choice_formatter",
"explain_then_answer",
"tutor",
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],
"needs_drawing": false,
"concepts_used": [
"Scalar Multiplication"
],
"new_concepts": [],
"current_concepts": [
"Scalar Multiplication",
"Matrix Representation"
]
}
</pre_analysis>

<reasoning>

Identify the given matrix

Using the Scalar Multiplication knowledge point
\[
F =

$$\begin{bmatrix} 20 & -6 & -42 & 22 \end{bmatrix}$$

\]

Apply scalar multiplication by -1

Using the Scalar Multiplication knowledge point
\[
-F = -1 \cdot

$$\begin{bmatrix} 20 & -6 & -42 & 22 \end{bmatrix}$$

=

$$\begin{bmatrix} -20 & 6 & 42 & -22 \end{bmatrix}$$

\]
</reasoning>

<answer>
<mcq-correct>(A) \([-20 \quad 6 \quad 42 \quad -22]\)</mcq-correct>
<mcq-option>(B) \([-10 \quad 6 \quad 22 \quad -12]\)</mcq-option>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Scalar Multiplication"
]
}
</post_analysis>

Answer:

<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"tutor",
"mastery_adaptive_brevity"
],
"needs_drawing": false,
"concepts_used": [
"Scalar Multiplication"
],
"new_concepts": [],
"current_concepts": [
"Scalar Multiplication",
"Matrix Representation"
]
}
</pre_analysis>

<reasoning>

Identify the given matrix

Using the Scalar Multiplication knowledge point
\[
F =

$$\begin{bmatrix} 20 & -6 & -42 & 22 \end{bmatrix}$$

\]

Apply scalar multiplication by -1

Using the Scalar Multiplication knowledge point
\[
-F = -1 \cdot

$$\begin{bmatrix} 20 & -6 & -42 & 22 \end{bmatrix}$$

=

$$\begin{bmatrix} -20 & 6 & 42 & -22 \end{bmatrix}$$

\]
</reasoning>

<answer>
<mcq-correct>(A) \([-20 \quad 6 \quad 42 \quad -22]\)</mcq-correct>
<mcq-option>(B) \([-10 \quad 6 \quad 22 \quad -12]\)</mcq-option>
</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Scalar Multiplication"
]
}
</post_analysis>