Asked by michael
a rectangle has its base on the x-axis, and its upper corners in the graph of y=27-x^2. what is the maximal area of this rectangle?
Answers
Answered by
Steve
a = 2x(27-x^2)
da/dx = 54-6x^2
max a at x=3
a(3) = 6*18 = 108
da/dx = 54-6x^2
max a at x=3
a(3) = 6*18 = 108
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