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secondary 4 | A Maths
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Jia Yi
Jia Yi

secondary 4 chevron_right A Maths

Hiii in help for this question ... Part A :(( couldn't get the correct answer which is -13.5 ?? TnT gladly appreciate it if someone can help me solve this question :(( idk why I can't get part a :(

Date Posted: 7 years ago
Views: 460
Ivy Chiang
Ivy Chiang
7 years ago
find dy/dx. after you found dy/dx you will have few values of x. investigate the different values of x with d2y/dx2 for the minimum value. hope it helps :)

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Mir Akbarkhan
Mir Akbarkhan's answer
24 answers (Tutor Details)
1st
Hello jia yi, for minimum gradient, you let the 2nd derivative = 0 and proceed to find the value of x and substitute it back into the gradient equation.
Jia Yi
Jia Yi
7 years ago
Oh okay thank you so much :) I finally know how to do now . Thank you ! :)