Boy Mow Chau's answer to There's a feeling's Secondary 4 E Maths Singapore question.

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Boy Mow Chau
Boy Mow Chau's answer
317 answers (Tutor Details)
1st
the question is only asking for the inverse matrix.
Eric Nicholas K
Eric Nicholas K
4 years ago
Back then, more than 10 years ago, inverse matrices was part of the A Maths syllabus.

Now, I don’t think that students learn the inverse matrix in E Maths.

To do this question, we just let the unknown matrix be a 2 x 2 matrix (a b c d).

We then proceed to solve several simuls for the four elements in the unknown matrix.