Canonical URI: https://w3id.org/kmath/textbook_solution/donga_solution_body_p131_example_01
| rdf:type | math:TextbookSolution |
|---|---|
| rdfs:label | 동아 p131 예제 1 풀이 |
| rdfs:comment | 동아 공통수학1 본문 p131 예제 1의 풀이. |
| math:answerText | \(X=\begin{pmatrix}2&0\\-2&-5\end{pmatrix}\) |
| math:explanationText | 양변에서 \(\begin{pmatrix}1&2\\3&4\end{pmatrix}\)를 빼면 \[ X+\begin{pmatrix}1&2\\3&4\end{pmatrix} -\begin{pmatrix}1&2\\3&4\end{pmatrix} = \begin{pmatrix}3&2\\1&-1\end{pmatrix} -\begin{pmatrix}1&2\\3&4\end{pmatrix} \] \[ X+O=\begin{pmatrix}2&0\\-2&-5\end{pmatrix} \] 이므로 \[ X=\begin{pmatrix}2&0\\-2&-5\end{pmatrix}. \] |
| math:mappingConfidence | 1.0 |
| math:pageStart | 131 |
| math:problem | textbook_problem:donga_vision_p131_example_01 |
| math:reviewStatus | reviewed |
| math:solutionKind | worked_solution |
| math:usesSolutionPattern | solution_pattern:matrix_linear_combination_entries |