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If 'c' is small in comparison with l the...

If 'c' is small in comparison with l then `((l)/(l+c))^(1//2) + ((l)/(l-c))^(1//2)` =

A

`2 + (3c)/(4l)`

B

`2 + (3c^2)/(4l^2)`

C

`l + (3c^2)/(4l^2)`

D

`l + (3c)/(4l)`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-BINOMIAL THEOREM-EXERCISE - II
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  2. If x^3, x^4, x^5 …….can be neglected then sqrt(x^2 + 16 ) - sqrt(x^2 +...

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  3. If 'c' is small in comparison with l then ((l)/(l+c))^(1//2) + ((l)/(l...

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  4. If x is numerically so small so that x^2 and higher powers of x can be...

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  5. If x is small so that x^2 and higher powers can be neglected, then the...

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  6. 1+(2)/(4) + (2.5)/(4.8)+(2.5.8)/(4.8.12)+(2.5.8.11)/(4.8.12.16)+…..=

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  7. (3)/(4.8)+(3.5)/(4.8.12)+(3.5.7)/(4.8.12.16)+….=

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  8. Observe the following statements : Statement -I : In the expansion...

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  9. The following coefficients which are in increasing order are :

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  10. Observe the following statements : Statement - I : 1/2 . ""^10C0 -...

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  11. The number of terms in the expansions of (1+3x+3x^2+x^3)^6, (x+y-z)^16...

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  12. (1+x)^n = sum(r = 0)^(n) Cr x^r then match the following

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  13. (1+x)^n = sum(r = 0)^(n) Cr x^r then match the following

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  14. Assertion (A): In the expansion of (1+x)^n, three consecutive terms a...

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  15. Assertion (A) : In the (1+x)^50, the sum of the coefficients of odd po...

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  16. If ab ne 0 and the sum of the coefficient of x^7 and x^4 in the expans...

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  17. Coefficient of x^3y^4z^2 in (2x-3y+4z)^9 is

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  18. Coefficient of x^18 in (x^2 + 1)(x^2 + 4)(x^2 + 9)….(x^2 + 100) is

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  19. If the middle term in the expansion of (1+x)^(2n) is the greatest term...

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  20. If 2^2006 - 2006 divided by 7, the remainder is

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