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751.

Show that each of the relation R in the set , given by (i) (ii) is an equivalence relation. Find the set of all elements related to 1 in each case.

Answer» Show that each of the relation R in the set , given by (i) (ii) is an equivalence relation. Find the set of all elements related to 1 in each case.
752.

The area under the curve y=x2–3x+2 with boundaries as x-axis and the ordinates x = 0, x = 3 is

Answer»

The area under the curve y=x23x+2 with boundaries as x-axis and the ordinates x = 0, x = 3 is

753.

If sin2mx+cos2ny=a2 where m,n(≠0),a are constants, then dydx=

Answer»

If sin2mx+cos2ny=a2 where m,n(0),a are constants, then dydx=

754.

Find the equation of the circle which passes through the points (2, 3) and (4, 5) and the centre lies on the straight line y - 4x + 3 = 0.

Answer»

Find the equation of the circle which passes through the points (2, 3) and (4, 5) and the centre lies on the straight line y - 4x + 3 = 0.

755.

The value of determinant △=∣∣∣∣−23103−4−18−12−40∣∣∣∣ is equal to

Answer»

The value of determinant =
231034181240
is equal to

756.

If P = q/((q^2 + B^2)^3/2) , where B is a constant, then for what value of q, P will be maximum

Answer» If P = q/((q^2 + B^2)^3/2) , where B is a constant, then for what value of q, P will be maximum
757.

The diagram shows three circles externally tangent to each other and to a semicircle.The shaded area is 120 sq.units. The area of the unshaded parts of the semi circle in square units is

Answer»

The diagram shows three circles externally tangent to each other and to a semicircle.The shaded area is 120 sq.units. The area of the unshaded parts of the semi circle in square units is




758.

Explain inequalities related to modulus of real number

Answer» Explain inequalities related to modulus of real number
759.

The period of the function f(x)=3sin2√3x+2cos5√3x is

Answer»

The period of the function f(x)=3sin23x+2cos53x is

760.

Consider a parabola y2=4x, Let A be the vertex of parabola, P be any point on the parabola and B is a point on the axis of parabola, if PA⊥PB, then the locus of centroid of △PAB is

Answer»

Consider a parabola y2=4x, Let A be the vertex of parabola, P be any point on the parabola and B is a point on the axis of parabola, if PAPB, then the locus of centroid of PAB is

761.

An equation of a tangent drawn to the curve y=x2−3x+2 from the point (1,−1) is

Answer»

An equation of a tangent drawn to the curve y=x23x+2 from the point (1,1) is

762.

Which of the following can be the parametric equation of x2 = 4ay

Answer»

Which of the following can be the parametric equation of x2 = 4ay



763.

If x=5+2√6, then find the value of x-1/√x.

Answer» If x=5+2√6, then find the value of x-1/√x.
764.

solve 8x^4+4x^3-18x^2+11x-2=0,given that it haz equal roots.

Answer» solve 8x^4+4x^3-18x^2+11x-2=0,given that it haz equal roots.
765.

x2-x+1 x-1x x +1cos θ-sin θ2.sin θcos θ

Answer» x2-x+1 x-1x x +1cos θ-sin θ2.sin θcos θ
766.

The sum of roots of the equation sin−13x5+sin−14x5=sin−1x, x∈[−1,1] is

Answer» The sum of roots of the equation sin13x5+sin14x5=sin1x, x[1,1] is
767.

The locus of the point which divides the double ordinate of the parabola y2=6ax in the ratio 5:6, is

Answer»

The locus of the point which divides the double ordinate of the parabola y2=6ax in the ratio 5:6, is

768.

4. sec2 x tan y dx + sec2 y tan x dy 0

Answer» 4. sec2 x tan y dx + sec2 y tan x dy 0
769.

x+1, if x2110,f(x)=

Answer» x+1, if x2110,f(x)=
770.

The fraction exceeding its pth power by the greatest number possible, where p ≥ 2, is

Answer»

The fraction exceeding its pth power by the greatest number possible, where p 2, is



771.

The solution set of the equation xlogx(1−x)2=9 is

Answer»

The solution set of the equation xlogx(1x)2=9 is


772.

29. What is the range of sin2A-cos2A and how?

Answer» 29. What is the range of sin2A-cos2A and how?
773.

The equation of the plane which contains the line of intersection of planes x+2y+3z−4=0 and 2x+y−z+5=0 which is perpandicular to the plane 5x+3y−6z+8=0

Answer»

The equation of the plane which contains the line of intersection of planes x+2y+3z4=0 and 2x+yz+5=0 which is perpandicular to the plane 5x+3y6z+8=0

774.

Solve the following systems of inequalities graphically: 2x-y > 1, x -2y < -1

Answer»

Solve the following systems of inequalities graphically:

2x-y > 1, x -2y < -1

775.

The 2n vertices of graph G correspond to all subsets a set of size n, for n≥6. Two vertices of G are adjacent if and only if the corresponding sets intersect in exactly two elements.The maximum degree of a vertex in G is

Answer»

The 2n vertices of graph G correspond to all subsets a set of size n, for n6. Two vertices of G are adjacent if and only if the corresponding sets intersect in exactly two elements.



The maximum degree of a vertex in G is



776.

What is integral and differential calculus? How it can be used in numericals? Please explain with an example each. Is it very necessary to learn more detailed about them keeping in mind the AIIMS UG examination?

Answer»

What is integral and differential calculus?

How it can be used in numericals?

Please explain with an example each.

Is it very necessary to learn more detailed about them keeping in mind the AIIMS UG examination?

777.

If the normal to the curve y2 = 5x -1, at the point(1, -2) is of the form ax - 5y + b = 0, then a + b = _________________.

Answer» If the normal to the curve y2 = 5x -1, at the point(1, -2) is of the form ax - 5y + b = 0, then a + b = _________________.
778.

Let z=−1+√3i2, where i=√−1, and r, s ϵ {1, 2, 3}. Let P=[(−z)rz2sz2szr] and I be the identity matrix of order 2. Then, the total number of ordered pairs (r, s) for which P2 = -I is ___

Answer» Let z=1+3i2, where i=1, and r, s ϵ {1, 2, 3}. Let P=[(z)rz2sz2szr] and I be the identity matrix of order 2. Then, the total number of ordered pairs (r, s) for which P2 = -I is ___
779.

In a circle of diameter 40 cm, the length of a chord is 20 cm. Find the length of minor arc of the chord.

Answer» In a circle of diameter 40 cm, the length of a chord is 20 cm. Find the length of minor arc of the chord.
780.

In a town, 25% of the persons earned more than Rs 45,000 whereas 75% earned more than 18,000. Calculate the absolute and relative values of dispersion.

Answer»

In a town, 25% of the persons earned more than Rs 45,000 whereas 75% earned more than 18,000. Calculate the absolute and relative values of dispersion.

781.

Suppose a differentiable function f(x) satisfies the identity f(x+y)=f(x)+f(y)+xy2+x2y for all real x and y. If limx→0f(x)x=1, then f′(3) is equal to

Answer» Suppose a differentiable function f(x) satisfies the identity f(x+y)=f(x)+f(y)+xy2+x2y for all real x and y. If limx0f(x)x=1, then f(3) is equal to
782.

The production of electric bulbs in different factories is shown in the following table. Find the median of the productions. No. of bulbs produced (Thousands) 30 - 40 40 - 50 50 - 60 60 - 70 70 - 80 80 - 90 90 - 100 No. of factories 12 35 20 15 8 7 8

Answer» The production of electric bulbs in different factories is shown in the following table. Find the median of the productions.
























No. of bulbs

produced (Thousands)
30 - 40 40 - 50 50 - 60 60 - 70 70 - 80 80 - 90 90 - 100
No. of factories 12 35 20 15 8 7 8
783.

The slopeof the tangent to the curveatthe point (2, −1) is(A) (B) (C) (D)

Answer»

The slope
of the tangent to the curveat
the point (2, −1) is


(A) (B) (C) (D)

784.

The range of f(x)=|x|+5 is

Answer»

The range of f(x)=|x|+5 is

785.

Let the algebric sum of the perpendicular distances from the points (2, 0), (0, 2), (1, 1) to a variable straight line be zero, then the line passes through a fixed point whose co-ordinates are (I.I.T 1991)

Answer»

Let the algebric sum of the perpendicular distances from the points (2, 0), (0, 2), (1, 1) to a variable straight line be zero, then the line passes through a fixed point whose co-ordinates are

(I.I.T 1991)



786.

The volume of tetrahedron whose vertices areA = (3, 2, 1) ,~B = (1, 2, 4),~ C = (4, 0, 3),~ D = (1, 1, 7)~will be –––––cubic units

Answer»

The volume of tetrahedron whose vertices are


A = (3, 2, 1) ,~B = (1, 2, 4),~ C = (4, 0, 3),~ D = (1, 1, 7)~will be –––cubic units



787.

If a,b,c are in geometric progression with common ratio r (r&gt;1) such that abc=216 and ab+bc+ca=156, then

Answer»

If a,b,c are in geometric progression with common ratio r (r>1) such that abc=216 and ab+bc+ca=156, then

788.

∫1sinx√sinxcosxdx is equal to(where C is integration constant)

Answer» 1sinxsinxcosxdx is equal to

(where C is integration constant)
789.

Find equation of the line parallel to the line 3 x – 4 y + 2 = 0 and passing through the point (–2, 3).

Answer» Find equation of the line parallel to the line 3 x – 4 y + 2 = 0 and passing through the point (–2, 3).
790.

(x-1) (2x+5) diffrentiation w.r.t. dy/d

Answer» (x-1) (2x+5) diffrentiation w.r.t. dy/d
791.

If α,β,γ are the roots of x3+lx+m=0, then the value of α3+β3+γ3 is

Answer»

If α,β,γ are the roots of x3+lx+m=0, then the value of α3+β3+γ3 is

792.

11. The number of ordered pairs of natural numbers (a, b)such that ab/(a+b)=511 i

Answer» 11. The number of ordered pairs of natural numbers (a, b)such that ab/(a+b)=511 i
793.

If the value of determinant ∣∣∣∣∣1sin(x+α)cos(x+α)1sin(x+β)cos(x+β)1sin(x+γ)cos(x+γ)∣∣∣∣∣ is

Answer»

If the value of determinant

1sin(x+α)cos(x+α)1sin(x+β)cos(x+β)1sin(x+γ)cos(x+γ)

is


794.

If tanA=cosec 5∘−cot5∘, where A is an acute angle, then the value of tan24A+tan12A+tan6A is

Answer»

If tanA=cosec 5cot5, where A is an acute angle, then the value of tan24A+tan12A+tan6A is

795.

Differentiate between budget and procedure.

Answer»

Differentiate between budget and procedure.

796.

If two ordered pairs are related as (a4,a−2b)=(0,6+b), then a+b is

Answer»

If two ordered pairs are related as
(a4,a2b)=(0,6+b), then a+b is

797.

If log3(3x−8)=2−x, then the value of x is

Answer»

If log3(3x8)=2x, then the value of x is

798.

The distance between the orthocentre and circumcentre of the triangle with vertices (1, 2) (2, 1) and (3+√32,3+√32) is

Answer»

The distance between the orthocentre and circumcentre of the triangle with vertices (1, 2) (2, 1) and (3+32,3+32) is


799.

62 Sin2A=4/5 prove sinA=?

Answer» 62 Sin2A=4/5 prove sinA=?
800.

Find the slope of the normal to thecurve x = acos3θ, y =asin3θ at.

Answer»

Find the slope of the normal to the
curve x = acos3θ, y =
asin3θ at.