Question

1 A. a rectangle, with open top, have the perimeter 56 cm. Find the dimension of...

1

A. a rectangle, with open top, have the perimeter 56 cm. Find the dimension of the rectangle that maximize its area

B. what can you say about the dimension that minimize the area?

2

A.Let x and y be two real numbers such that y - 2x = 20 and (3 - x)(y + 2) is a maximum. find x and y

B. suppose that one of these numbers is 6 what is the second one? why?

Math   Calculus   
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Answer #1

2 B) assuming only y-2x=20 has to be satisfied. (3-x)(y+2) is not maximum at these values.

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