Chua Yong Qi's answer to dream's Secondary 3 A Maths Singapore question.
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the maximum height can be found by finding the maximum point of the graph, through completing the square.
for (ii), find the values of t when h=10 first. since h has to be at least 10, meaning that the graph of h= 5t-1/5t^2 has to be above h=10, the range of values of t has to be in between the values found.
for (ii), find the values of t when h=10 first. since h has to be at least 10, meaning that the graph of h= 5t-1/5t^2 has to be above h=10, the range of values of t has to be in between the values found.
Date Posted:
4 years ago
Thank you so much !!!
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