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If a is any natural number then a^3-1/a^...

If a is any natural number then `a^3-1/a^3` will always be greater than or equal to

A

`3a+(1)/(a)`

B

`(a+1)/(a)`

C

`a^(3)+(1)/(a^(3))`

D

`(3(a-1))/(a)`

Text Solution

Verified by Experts

The correct Answer is:
d
(i) `a-1/age0`
(ii) consider `a-1/age0`
(iii) Cube the above equation and obtain the required result
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