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{:(" "Lt),(n rarr oo):} [ (1)/(n^(2)) se...

`{:(" "Lt),(n rarr oo):} [ (1)/(n^(2)) sec^(2). (1)/(n^(2)) + (2)/(n^(2))sec^(2). (4)/(n^(2))+...+1/n sec^(2)1]=`

A

`1/2 ` sec 1

B

`1/2 cosec 1`

C

tan 1

D

`1/2 tan 1`

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-DEFINITE INTEGRALS-EXERCISE - II
  1. Lt(ntooo)[(1^(3))/(n^(4)+1^(4))+(2^(3))/(n^(4)+2^(4))+.........+(1)/(2...

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  2. Lt(ntooo){(n+1)/(n^(2)+1^(2))+(n+2)/(n^(2)+2^(2))+.......+1/(n)}

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  3. {:(" "Lt),(n rarr oo):} [ (1)/(n^(2)) sec^(2). (1)/(n^(2)) + (2)/(n^(2...

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  4. {:(" "Lt),(n rarr oo):} ((sqrt(1)+2sqrt(2)+3sqrt(3)+......+nsqrt(n))/(...

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  5. {:(" "Lt),(n rarr oo):} [(sqrt(n^(2)-1^(2)))/(n^(2))+(sqrt(n^(2)-2^(2)...

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  6. {:(" "Lt),(n rarr oo):} ((1)/(sqrt(4n^(2)-1))+(1)/(sqrt(4n^(2)-2^(2)))...

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  7. {:(" "Lt),(n rarr oo):} ((1)/(sqrt(2n-1^(2)))+(1)/(sqrt(4n-2^(2)))+(1)...

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  8. {:(" "Lt),(n rarr oo):} ((1)/(sqrt(n^(2)))+(1)/(sqrt(n^(2)+n))+(1)/(sq...

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  9. Lt(ntooo)[(n^(1//2))/(n^(3//2))+(n^(1//2))/((n+3)^(3//2))+(n^(1//2))/(...

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  10. If S(n)={(1)/(1+sqrt(n))+(1)/(2+sqrt(2n))+(1)/(3+sqrt(3n))+....+(1)/(n...

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  11. {:(" "Lt),(n rarr oo):} 3/n [1 + sqrt((n)/(n+3))+sqrt((n)/(n+6))+sqrt(...

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  12. {:(" "Lt),(n rarr oo):} ((n!)/(n^(n)))^(1/n)=

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  13. Evaluate the limit . underset(n to 00)("lim") [(1+(1)/(n^(2)))(1+(2^...

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  14. If f(n)= 1/n {(n+1)(n+2)....2n}^(1//n) then {:(" "Lt),(n rarr oo):} f(...

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  15. {:(" "Lt),(n rarr oo):}(((2n)!)/(n!n^(n)))^(1/n)=

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  16. The solution for x of the equation int(sqrt(2))^(x) (dt)/(|t|sqrt(t^(2...

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  17. int(0)^(1)(dx)/(x+sqrt(x))=

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  18. int(0)^(oo) (45a)/((3+a+a t)^(4))dt=

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  19. For a gt 1, b gt 1, the value of int(0)^(oo) (a^(-x)-b^(-x))dx=

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  20. If int(ln 2)^(x) (e^(x)-1)^(-1)dx= ln (3/2) then x=

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