Home
Class 8
MATHS
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

`3(a+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
Promotional Banner

Similar Questions

Explore conceptually related problems

M.A. is always greater than 1 in

If n is any natural number then n^(2)(n^(2)-1) is always divisible

If n is any natural number, then 5^(2n)-1 is always divisible by how many natural numbers ?

If a^(2)+b^(2)+c^(2)=14, then ab+bc+ca is always greater than or equal to

A fair die is tossed. List the sample space. State the probability of the event : (i) a number less than 3 appears (ii) a number greater than 3 appears (iii) a number greater than or equal to 3 appears

For an integer a, a^3 is always greater than a^2 . True or false.

In any triangle ABC sum(sin^(2)A+sin A+1)/(sin A) is always greater than or equal

If x is a real number than x^(2)+x+1 is (a) less than (3)/(4) (b) zero for at least one value of x (c) always negative (d) greater than or equal to (3)/(4)

sin^2theta+cosec^2theta is always (a)greater than 1 (b)less than 1 (c)greater than or equal to 2 (d)equal to 2