MATH 1231 Lecture Notes - Lecture 18: Second Derivative

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Math 1231 - lecture 19 - mid term review. Please note below the structure of mid term: 4 multiple choice questions - 5 points each. 1 limit definition of derivative question - 10 points. 4 calculation of derivatives questions - 5 points each. 4 class pack questions (pg 46 - 47) - 10 points each. 1 question to use calculator to find the model - 10 points each. Important points to remember for the mid-term test: (lnx)" = 1/x (ex)" = ex. We need to expand d(x) which the demand function. Note: all the steps are required to be shown in the exam. Note: if we decrease x by 20 then d(x) increases by 100. Let the points be (x, y) and (x1, y1) Using the points (580, 1100) and (600, 1000), we will get the slope. To maximise the function, we have to find out derivative of r(x)

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