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secondary 4 | A Maths
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Lionel Cheah Kai En
Lionel Cheah Kai En

secondary 4 chevron_right A Maths

I differentiated the curves already - what should i do now?

Date Posted: 7 years ago
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Lim Han Quan
Lim Han Quan's answer
43 answers (A Helpful Person)
1st
The gradients of the tangents should be the same (keyword is parrallel tangents), simply equate the 2 differentiated equations you've got and solve for x.

Whatever x is, it should be the equation already, since vertical line equations are denoted with x=(real number)