Low Yi Yin's answer to M's Secondary 3 A Maths Singapore question.
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For v) I added an additional portion of how those two curve differ (for further understanding)
Hope this helps! ;))
Hope this helps! ;))
Date Posted:
1 year ago
Many thanks for helping. Is it possible to post the part for part (v) as the last line cannot be seen?
v) d/dx ( -0.5x^2 +7x +c) = -t +7 which is the same as d/dx (-0.5t^2 + 7t +6). This suggests their gradient will be the same for all real values of t. Since gradient = speed (distance-time graph). Their motion is the same.
^added a few more explanations
^added a few more explanations
Thank you for the detailed explanation!
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