Solutions to Book of Proofs Richard Hammack / Question 12 chapter 4 Proofs

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[fast tangle]

• how should one go about solving this? i tried to show 4>= x(4-x) but than I only end with x>0 but x<=4. However, I cant figure out how to end without the equality

Solutions to Book of Proofs Richard Hammack / Question 12 chapter 4 Proofs

[covert condor]

x(4-x) is maximized for 4-2x = 0

if x = 2, then 2(4-2) = 4

conclude

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@fast tangle

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