= 4x-11 a) The temperature of oil in a car engine is increasing at a rate of r(x) degree (x3–9x2) Celsius per minute (wh
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= 4x-11 a) The temperature of oil in a car engine is increasing at a rate of r(x) degree (x3–9x2) Celsius per minute (wh
= 4x-11 a) The temperature of oil in a car engine is increasing at a rate of r(x) degree (x3–9x2) Celsius per minute (where x is the time in minutes). Find the general rate by which the temperature increases fr (x)dx (5 marks)
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