📓 Maths AS Level • 2018 Pure • Part 2, Q7-11 • Edexcel • 📝

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3:36
what i did get there is why do we have to use -4/5 instead of its degree

nathanhawey
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8:27 question 8ai) it says find the value of v that minimizes the cost of the journey. how did you know that the curve even had a turning point. the question doesnt have any graph. why are you finding the turning point.

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