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2751.

If all integers satisfying the inequality (x−1)2(x−2)3(x−4)5(x−5)5(x−5)2≥0 are arranged in increasing order then the quadratic equation with the first and fifth integers in the list as roots is -

Answer»

If all integers satisfying the inequality (x1)2(x2)3(x4)5(x5)5(x5)20 are arranged in increasing order then the quadratic equation with the first and fifth integers in the list as roots is -

2752.

If α,β are the roots of the equation x2−2x+4=0, then the equation whose roots are α3,β3 is

Answer»

If α,β are the roots of the equation x22x+4=0, then the equation whose roots are α3,β3 is

2753.

The range of f(x)=−x2+7x+60 in x∈[−3,2] is

Answer»

The range of f(x)=x2+7x+60 in x[3,2] is

2754.

The linear factor(s) of the equation x2+4xy+4y2+3x+6y−4=0 is/are

Answer»

The linear factor(s) of the equation x2+4xy+4y2+3x+6y4=0 is/are

2755.

If a, b, c are positive rational numbers such that a > b > c and the quadratic equation (a+b−2c)x2+(b+c−2a)x+(c+a−2b)=0 has a root in the interval (-1, 0), then

Answer»

If a, b, c are positive rational numbers such that a > b > c and the quadratic equation
(a+b2c)x2+(b+c2a)x+(c+a2b)=0 has a root in the interval (-1, 0), then


2756.

If a,b,c are non-zero real numbers and ax2+bx+c=0, bx2+cx+a=0 have one root in common, then a3+b3+c3abc=

Answer»

If a,b,c are non-zero real numbers and ax2+bx+c=0, bx2+cx+a=0 have one root in common, then a3+b3+c3abc=

2757.

(I) If x2+x−a=0 has integral roots(P)2and a∈N,then a can be equal to(II) If the equation ax2+2bx+4c=16(Q)12has no real roots and a+c>b+4,then the integral value of c can be(III) If equation x2+2bx+9b−14=0(R)1has only negative roots, then the integralvalues of b can be(IV) If N be the number of solutions of(S)30the equation |x−|4−x||−2x=4, thenthe value of N is Which of the following is the only CORRECT combination?

Answer» (I) If x2+xa=0 has integral roots(P)2and aN,then a can be equal to(II) If the equation ax2+2bx+4c=16(Q)12has no real roots and a+c>b+4,then the integral value of c can be(III) If equation x2+2bx+9b14=0(R)1has only negative roots, then the integralvalues of b can be(IV) If N be the number of solutions of(S)30the equation |x|4x||2x=4, thenthe value of N is

Which of the following is the only CORRECT combination?
2758.

For non-zero distinct real numbers a1 and a2, let f(x)=a1x2+b1x+c1,g(x)=a2x2+b2x+c2 and p(x)=f(x)−g(x). If p(x)=0 only at x=−1 and p(−2)=2, then the value of p(2) is

Answer»

For non-zero distinct real numbers a1 and a2, let f(x)=a1x2+b1x+c1,g(x)=a2x2+b2x+c2 and p(x)=f(x)g(x). If p(x)=0 only at x=1 and p(2)=2, then the value of p(2) is

2759.

The values of m for which y=mx2+3x−4−4x2+3x+m has range R is

Answer»

The values of m for which y=mx2+3x44x2+3x+m has range R is

2760.

The number of integral value(s) of a for which loge(x2+5x)=loge(x+a+3) has exactly one solution is

Answer»

The number of integral value(s) of a for which loge(x2+5x)=loge(x+a+3) has exactly one solution is

2761.

If α and β are the roots of the equations x2+px+q=0, x2008+p1004x1004+q1004=0, then αβ and βα are the roots of xn+1+(x+1)n=0. The value of n must be

Answer» If α and β are the roots of the equations x2+px+q=0, x2008+p1004x1004+q1004=0, then αβ and βα are the roots of xn+1+(x+1)n=0. The value of n must be
2762.

The sum of the roots of equation log2(32+x−6x)=3+xlog2(32) is

Answer»

The sum of the roots of equation log2(32+x6x)=3+xlog2(32) is

2763.

The sum of roots of the polynomial equation (x−1)(x−2)(x−3)=2(x−2)(x−3) is

Answer»

The sum of roots of the polynomial equation (x1)(x2)(x3)=2(x2)(x3) is


2764.

The number of values of x satisfying the equation (x2+7x+11)(x2−4x−21)=1 is

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The number of values of x satisfying the equation (x2+7x+11)(x24x21)=1 is

2765.

If the roots of the equation x2+4x8x+6=k−1k+1 are equal in magnitude and opposite in sign, then the value of k is

Answer»

If the roots of the equation x2+4x8x+6=k1k+1 are equal in magnitude and opposite in sign, then the value of k is

2766.

If a+2b+c=4 and a,b,c∈R, then the maximum value of (ab+bc+ca) is

Answer» If a+2b+c=4 and a,b,cR, then the maximum value of (ab+bc+ca) is
2767.

The quadratic equations x2−6x+a=0, x2−cx+6=0 have one root in common. The other roots of the first and second equations are integers in the ratio 4:3 . Then common root is :

Answer»

The quadratic equations x26x+a=0, x2cx+6=0 have one root in common. The other roots of the first and second equations are integers in the ratio 4:3 . Then common root is :

2768.

The value(s) of 'p' for which the parabola represented by quadratic function y=(p−2)x2+8x+(p+4) will remain below X-axis for all real values of x is .

Answer»

The value(s) of 'p' for which the parabola represented by quadratic function y=(p2)x2+8x+(p+4) will remain below X-axis for all real values of x is .

2769.

Let −π6<θ<−π12. Suppose α1 and β1 are the roots of the equation x2−2xsecθ+1=0 and α2 and β2 are the roots of the equation x2+2xtanθ−1=0. If α1>β1 and α2>β2, then α1+β2 equals:

Answer»

Let π6<θ<π12. Suppose α1 and β1 are the roots of the equation x22xsecθ+1=0 and α2 and β2 are the roots of the equation x2+2xtanθ1=0. If α1>β1 and α2>β2, then α1+β2 equals:

2770.

If α, β are the roots of x2+px+q=0, then the value of α3+β3 is

Answer»

If α, β are the roots of x2+px+q=0, then the value of α3+β3 is

2771.

If x2 + 2(a - 1)x + a + 5 =0 has real roots belonging to the interval (1, 3) then aϵ

Answer»

If x2 + 2(a - 1)x + a + 5 =0 has real roots belonging to the interval (1, 3) then aϵ


2772.

If 5,5r,5r2 are the side lengths of a triangle, then the possible value(s) of r is/are

Answer»

If 5,5r,5r2 are the side lengths of a triangle, then the possible value(s) of r is/are

2773.

If both the roots of ax2+bx+c=0 are real, positive and distinct, then (where Δ=b2−4ax)

Answer»

If both the roots of ax2+bx+c=0 are real, positive and distinct, then
(where Δ=b24ax)

2774.

Solve the following quadratics 4x2+1=0

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Solve the following quadratics 4x2+1=0

2775.

If a2(a+p)=b2(b+p)=c2(c+p), where a,b,c,p∈R, then value of ab+bc+ca is

Answer»

If a2(a+p)=b2(b+p)=c2(c+p), where a,b,c,pR, then value of ab+bc+ca is

2776.

The largest natural number ′a′ for which the maximum value of f(x)=a−1+2x−x2 is always smaller than the minimum value of g(x)=x2−2ax+10−2a is

Answer»

The largest natural number a for which the maximum value of f(x)=a1+2xx2 is always smaller than the minimum value of g(x)=x22ax+102a is

2777.

A quadratic equation whose difference of roots is 3 and the sum of the squares of the roots is 29, is given by

Answer»

A quadratic equation whose difference of roots is 3 and the sum of the squares of the roots is 29, is given by

2778.

Number of integral values of λ for which x2−2λx&lt;41−6λ ∀ x∈(1,6], is

Answer» Number of integral values of λ for which x22λx<416λ x(1,6], is
2779.

Set of values of a for which both the roots of the quadratic polynomial f(x)=ax2+(a−3)x+1 lie on one side of the y−axis is

Answer»

Set of values of a for which both the roots of the quadratic polynomial f(x)=ax2+(a3)x+1 lie on one side of the yaxis is

2780.

If the roots of the equation x2−kx+m=0 is tan2x and cot2x, then the minimum possible value of k+m is

Answer» If the roots of the equation x2kx+m=0 is tan2x and cot2x, then the minimum possible value of k+m is
2781.

If the equation x4−(k−1)x2+(2−k)=0 has three distinct real roots, then the possible value(s) of k is/are

Answer»

If the equation x4(k1)x2+(2k)=0 has three distinct real roots, then the possible value(s) of k is/are

2782.

If the quadratic equation x2+[a2−5a+b+4]x+b=0 has roots −5 and 1, then maximum value of [a] (where [a] denote the greatet integer function) is

Answer» If the quadratic equation x2+[a25a+b+4]x+b=0 has roots 5 and 1, then maximum value of [a] (where [a] denote the greatet integer function) is
2783.

Which of the following will have their graph plotted in first and second quadrant only?

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Which of the following will have their graph plotted in first and second quadrant only?

2784.

If the roots of the equation (m−2)x2−(8−2m)x−(8−3m)=0 are real and opposite in sign, then the number of integral value(s) of m is

Answer» If the roots of the equation (m2)x2(82m)x(83m)=0 are real and opposite in sign, then the number of integral value(s) of m is
2785.

If atleast one of the root of the equation x2−(a−3)x+a=0 is greater than 2, then a lies in the interval

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If atleast one of the root of the equation x2(a3)x+a=0 is greater than 2, then a lies in the interval

2786.

If 2x2+5x+2b=0 and 2x3+7x2+5x+1=0 have atleast one common root for three values of b, then the sum of all three values of b is

Answer»

If 2x2+5x+2b=0 and 2x3+7x2+5x+1=0 have atleast one common root for three values of b, then the sum of all three values of b is

2787.

The solutions of quadratic equation 3x2−5x+2=0 are

Answer»

The solutions of quadratic equation 3x25x+2=0 are

2788.

Let α,β are the roots of the equation 2x2−3x−7=0, then the quadratic equation whose roots are αβ and βα is

Answer»

Let α,β are the roots of the equation 2x23x7=0, then the quadratic equation whose roots are αβ and βα is

2789.

If the roots of the equation 4x2+ax+3=0 are in ratio of 1:2, then value(s) of a is/are

Answer»

If the roots of the equation 4x2+ax+3=0 are in ratio of 1:2, then value(s) of a is/are

2790.

If x2+bx−a=0 and x2−ax+b=0 have only one common root, then

Answer»

If x2+bxa=0 and x2ax+b=0 have only one common root, then

2791.

If a:b=1:5, then the roots of the equation ax2−bx+4a=0 is/are

Answer»

If a:b=1:5, then the roots of the equation ax2bx+4a=0 is/are

2792.

The number of integral roots of the equation x4+√x4+20=22 is

Answer»

The number of integral roots of the equation x4+x4+20=22 is

2793.

Which of the following represents the graph of f(x)=ax2+bx+c where a&lt;b&lt;0&lt;c ?

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Which of the following represents the graph of f(x)=ax2+bx+c where a<b<0<c ?

2794.

If the range of x satisfying 3x+2&gt;(19)1/x is (a,∞), then least value of a is

Answer» If the range of x satisfying 3x+2>(19)1/x is (a,), then least value of a is
2795.

The number of integral values of a such that the difference between the roots of the equation x2+ax−a=0 is less than 1, is

Answer»

The number of integral values of a such that the difference between the roots of the equation x2+axa=0 is less than 1, is

2796.

The roots of the equation x2+2(a−3)x+9=0 lie between −6 and 1. If 2,h1,h2,…,h20,[a], where [.] represents the greatest integer function, are in harmonic progression, then the value of 10h9 is

Answer» The roots of the equation x2+2(a3)x+9=0 lie between 6 and 1. If 2,h1,h2,,h20,[a], where [.] represents the greatest integer function, are in harmonic progression, then the value of 10h9 is
2797.

If the polynomial equation (x2+x+1)2−(m−3)(x2+x+1)+m=0,m∈R has two distinct real roots, then m lies in the interval

Answer»

If the polynomial equation (x2+x+1)2(m3)(x2+x+1)+m=0,mR has two distinct real roots, then m lies in the interval

2798.

Solve the following quadratics 21x2+9x+1=0

Answer»

Solve the following quadratics 21x2+9x+1=0

2799.

The number of integral values of x for which f(x)=2x2−20x+42 is negative is

Answer» The number of integral values of x for which f(x)=2x220x+42 is negative is
2800.

Let f(x)=Ax+B,A,B∈R and y=f(x) passes through the points (A,2A−B2) and (2B+3,(A+B)2−1). If B1,B2⋯Bn,n∈N, are different possible value(s) of B, then the value of n∑r=1Br is

Answer»

Let f(x)=Ax+B,A,BR and y=f(x) passes through the points (A,2AB2) and (2B+3,(A+B)21). If B1,B2Bn,nN, are different possible value(s) of B, then the value of nr=1Br is