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Let f be a continuous function on [2, 5]. If f takes only rational values for all x and f(3) = 12, then f(4.5) is equal to

A

`[f(3) +f(4.5)]/(7.5)`

B

12

C

`17.5`

D

`[f(4.5)-f(3)]/(1.5)`

Text Solution

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The correct Answer is:
B
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