Question: a) Let D be the function from Question 1A. Provide an informal argument that D' is not continuous at 0. This means that you must
a)


Let D be the function from Question 1A. Provide an informal argument that D' is not continuous at 0. This means that you must explain the key reason D' is not continuous at 0 without providing all the details. (Although, you are welcome to provide details if you choose to.)A disc has radius 2/3. A rectangle with sides of length r and r/2 is removed from its centre to leave a region with area R(r); in other words, R is a function of / which gives the area of the region of the disc with the square removed when the disc has radius r. What is the rate of growth of R with respect to r
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