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f(x) = (x - 8)^(4) (x - 9)^(5), 0 le x l...

`f(x) = (x - 8)^(4) (x - 9)^(5), 0 le x le 10`, monotonically decreases in

A

a) `((76)/(9), 10]`

B

b) `(8, (76)/(9))`

C

c) [0, 8)

D

d) `((76)/(9), 10]`

Text Solution

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The correct Answer is:
B
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