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secondary 4 | E Maths
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Jenson Ni
Jenson Ni

secondary 4 chevron_right E Maths chevron_right Singapore

Can someone help me out with this question. Thanks.

Date Posted: 6 months ago
Views: 23

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Neo Yu Shan
Neo Yu Shan's answer
276 answers (Tutor Details)
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Hope this helps
Eric Nicholas K
Eric Nicholas K
6 months ago
I doubt sec 4 students learn inverses in their syllabus though.
Neo Yu Shan
Neo Yu Shan
6 months ago
I think they do. I learned this in sec4
Eric Nicholas K
Eric Nicholas K
6 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
Neo Yu Shan
6 months ago
How else can we solve this without inverse?
Eric Nicholas K
Eric Nicholas K
6 months ago
We have to call C as (a b c d) and solve some simuls.
Neo Yu Shan
Neo Yu Shan
6 months ago
Ah right. But that would be 4 equations 4 unknowns. I think they learn 2 equations 2 unknowns only
Eric Nicholas K
Eric Nicholas K
6 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).