sstrike's answer to lana <3's Secondary 4 A Maths Singapore question.

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sstrike
Sstrike's answer
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lana <3
Lana <3
1 year ago
hi! why is it dy/ 12-p - 12 ??
sstrike
Sstrike
1 year ago
Concept of derivative
△y/△x

△x = (12+p) - (12)

Agree?