Tham KY's answer to Sebastian Kirito's Junior College 2 H2 Maths question.

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Tham KY
Tham Ky's answer
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Sebastian Kirito
Sebastian Kirito
6 years ago
For ii) what if I take n1 x l instead of l x n1? Is it different?
Tham KY
Tham KY
6 years ago
Only difference in direction, exactly the opposite. It is acceptable.