Answer: (a) A company makes computer chips from square wafers of silicon. It wants to
Chapter 3, Problem 11(choose chapter or problem)
(a) A company makes computer chips from square wafers of silicon. It wants to keep the side length of a wafer very close to 15 mm and it wants to know how the area of a wafer changes when the side length x changes. Find and explain its meaning in this situation. (b) Show that the rate of change of the area of a square with respect to its side length is half its perimeter. Try to explain geometrically why this is true by drawing a square whose side length x is increased by an amount . How can you approximate the resulting change in area if is small?
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