How is the answer B? | Mathematics | Page 1

deft brook May 17, 2023, 3:10 PM

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i got to the point (1-lnx)/x^2 = 0

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and it seems e = x no?

dark current May 17, 2023, 4:00 PM

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should be correct

deft brook May 17, 2023, 4:12 PM

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the answer is B according to mark scheme

trail mortar May 17, 2023, 7:39 PM

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Lemme check

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The derivative is...

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1-lnx/x²

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Huh...

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Yes...

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But

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Ohhhh I see

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They ask for the absolute maximum, not which value gives the absolute maximum

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You need to find the y not the z

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Ntt the x

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But the y is: lnx/x but we found x=e so lne/e which is 1/e

deft brook May 18, 2023, 1:05 AM

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oh ok thanks

frozen jacinthBOT May 18, 2023, 1:05 AM

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@deft brook has given 1 rep to @trail mortar

#How is the answer B?