## Question

secondary 4 | E Maths

Anyone can contribute an answer, even non-tutors.

##### Jenson Ni

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Can someone help me out with this question. Thanks.

Date Posted: 11 months ago
Views: 40

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1st
Hope this helps
Date Posted: 11 months ago
Eric Nicholas K
11 months ago
I doubt sec 4 students learn inverses in their syllabus though.
Neo Yu Shan
11 months ago
I think they do. I learned this in sec4
Eric Nicholas K
11 months ago
As far as I recall, when I learned matrices back then, it was inside the syllabus. But that was more than 10 years ago.
Neo Yu Shan
11 months ago
How else can we solve this without inverse?
Eric Nicholas K
11 months ago
We have to call C as (a b c d) and solve some simuls.
Neo Yu Shan
11 months ago
Ah right. But that would be 4 equations 4 unknowns. I think they learn 2 equations 2 unknowns only
Eric Nicholas K
11 months ago
Two equations will be in terms of a and c only while the other two equations will be in terms of b and d only (if I can remember).