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Let E=1/(1^2)+1/(2^2)+1/(3^2)+ Then, E<3...

Let `E=1/(1^2)+1/(2^2)+1/(3^2)+` Then, `E<3` b. `E >3//2` c. `E >2` d. `E<2`

A

`Elt3`

B

`Egt(3)/(2)`

C

`Elt2`

D

`Egt2`

Text Solution

Verified by Experts

The correct Answer is:
B, C
`E=(1)/(1^(2))+(1)/(2^(2))+(1)/(3^(2))+"......"`
`Elt1+(1)/((1)(2))+(1)/((2)(3))+"......"`
`Elt1+(1-(1)/(2))+((1)/(2)-(1)/(3))+"......"`
`Elt2 " " "…….(i)"`
`Egt1+(1)/((2)(3))+(1)/((1)(3))+"......"`
`Egt1+((1)/(2)-(1)/(3))+((1)/(3)-(1)/(4))+"......"`
`Egt1+(1)/(2),Egt(3)/(2)`
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