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The quadratic equation whose roots are t...

The quadratic equation whose roots are the minimum value of `sin^(2)theta-sin theta+1/2` and `lim_(xto oo)sqrt((x+1)(x+2))-x` is

A

(a)`3x^(2)-7x+3=0`

B

(b)`8x^(2)-14x+3=0`

C

(c)`x^(2)-7x+3=0`

D

(d)`2x^(2)-8x+3=0`

Text Solution

Verified by Experts

The correct Answer is:
B
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ARIHANT MATHS-LIMITS-Exercise (Single Option Correct Type Questions)
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  2. Let f(x) be a real valued function defined for all xge1, satistying f(...

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  3. The quadratic equation whose roots are the minimum value of sin^(2)the...

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  4. If x1=sqrt(3) and x(n+1)=(xn)/(1+sqrt(1+x n^2)),AA n in N then lim(n...

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  5. lim(xtoa^(-))(sqrt(x-b)-sqrt(a-b))/((x^(2)-a^(2))),(agtb) is

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  6. lim(ntooo)(sin^(n)1+cos^(n)1)^(n) is equal to

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  7. The value of lim(xto0)2/(x^(3))(sin^(-1)x-tan^(-1)x)^(2//x^(3)) equals

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  8. lim(nto oo)sum(r=1)^(n)r/(n^(2)+n+4) equals a. 0 b. 1/3 c. 1/2 d.1

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  9. Let U = {x : x ∈ N, x ≤ 9}; A = {x : x is an even number, 0 < x < 10};...

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  10. int(-1)^(2)[([x])/(1+x^(2))]dx, where [.] denotes the greatest integer...

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  11. If alpha and beta are roots of x^(2)-(sqrt(1-cos 2 theta))x+theta=0, w...

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  12. If f(x)=1/3(f(x+1)+5/(f(x+2))) and f(x)gt0,AA x epsilonR, then lim(xto...

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  13. Let f:(1,2)vecR satisfies the inequality (cos(2x-4)-33)/2ltf(x)lt(x^2|...

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  14. Let f(x) be polynomial of degree 4 with roots 1,2,3,4 and leading coef...

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  15. lim x→π/4 (4sqrt(2)-(cosx+sinx)^5)/(1−sin2x) is equal to

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  16. If lim(xto oo)(n.3^(n))/(n.(x-1)^(n)+n.3^(n+1)-3^(n))=1/3, the number ...

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  17. Let f(x)=underset(ntooo)lim(1)/(((3)/(pi)tan^(-1)2x)^(2n)+5). Then the...

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  18. Find the integral value of n for which ("lim")(xvec0)(cos^2x-cosx-e^x...

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  19. Find dy/dx if x^7-e^x=siny

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  20. underset(xto(pi)/(2))(lim)([(x)/(2)])/(log(e)(sinx))([.] denotes great...

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