Difference between the corresponding roots of x2 + ax + b = 0 and x2 + bx + a = 0 is same and a b, then

Anonymous User Maths Quadratic Equation 29 May, 2020 67 views

A particle is thrown upward vertically with initial speed where g is acceleration due to gravity on earth's surface.What is the maximum height attain by the particle?

Anonymous User Physics Laws of Motion and Friction 29 May, 2020 62 views

A Constant force f is applied on a particle of mass 'm' which is initially at rest. As the particle starts moving a resistive force -bv begins to act on it.Speed of the particle at any instant of time 't' is?

Anonymous User Physics Laws of Motion and Friction 28 May, 2020 89 views

Let a, b, c be any real numbers. Suppose that there are real numbers x, y, z not all zero such that x = cy + bz, y = az + cx and z = bx + ay. Then a2 + b2 + c2 + 2abc is equal to

Anonymous User Maths Complex Numbers 27 May, 2020 65 views

Let A be a 2 × 2 matrix with real entries. Let I be the 2 × 2 identity matrix. Denote by tr(A), the sum of diagonal entries of A. Assume that A2 = I.

Statement­1 : If A I and A – I, then det A = –1.

Statement­2 : If A I and A – I, then tr(A) 0.

Anonymous User Maths Complex Numbers 27 May, 2020 59 views

## Let A = . If |A2| = 25 the |a| quuals to Let A = .

If |A2| = 25 the |a| quuals to

Anonymous User Maths Complex Numbers 27 May, 2020 58 views

## If D =  for x  0, y  0 then D is If D = for x 0, y 0 then D is

Anonymous User Maths Complex Numbers 27 May, 2020 58 views

## Let A =  and B = , a, b  N. Then Let A = and B = , a, b N. Then

Anonymous User Maths Complex Numbers 26 May, 2020 58 views

## If a2 + b2 + c2 = – 2 and  then what is f(x) is a polynomial of degree? If a2 + b2 + c2 = – 2 and then what is f(x) is a polynomial of degree?

Anonymous User Maths Complex Numbers 26 May, 2020 65 views

If A = and I = , then which one of the following holds for all n ≥ 1, by the principle of mathematical induction

Anonymous User Maths Complex Numbers 26 May, 2020 66 views

## If a1, a2, a3, ...., an, ... are G.P., then the value of the determinant  is If a1, a2, a3, ...., an, ... are G.P., then the value of the determinant is

Anonymous User Maths Complex Numbers 26 May, 2020 88 views

## Let A =  and 10(B) = .  If B is the inverse of matrix A, then what is the ? Let A = and 10(B) = If B is the inverse of matrix A, then what is the ?

Anonymous User Maths Complex Numbers 26 May, 2020 57 views

## Let A =  ̄ The only correct statement about the matrix A is Let A = ̄

The only correct statement about the matrix A is

Anonymous User Maths Complex Numbers 26 May, 2020 59 views

## If A =  and A2 = , then If A = and A2 = , then

Anonymous User Maths Complex Numbers 26 May, 2020 57 views

A motor boat going down stream over came a raft at a point A, t = 60 min later it turned back and after some time passed the raft at a distance l = 6.0 km from the point A. Find the flow velocity assuming the duty of the engine to be constant?

Anonymous User Physics 26 May, 2020 71 views

A current carrying wire heats a metal rod. The wire provides a constant power (P) to the rod. The metal rod is enclosed in an insulated container. It is observed that the temperature (T) in the metal rod changes with time (t) as Where is a constant with appropiate dimension with is a constant with dimension of temperature .

The heat capacity of the metal is?

Anonymous User Physics 26 May, 2020 110 views

## What is maximum acceleration so that so that two block move together? What is maximum acceleration so that so that two block move together? Anonymous User Physics Laws of Motion and Friction 25 May, 2020 82 views

Two particles of masses m1 and m2 are placed 'd' distance apart. Due to gravitational attraction they move towards each other.What is speed of m1 when their separation reduces to d/2.

Anonymous User Physics Laws of Motion and Friction 24 May, 2020 102 views

## What is the Value of ? What is the Value of ?

Anonymous User Maths Complex Numbers 23 May, 2020 64 views

## If z = x – iy and z1/3 = p + iq, then when will value of ? If z = x – iy and z1/3 = p + iq, then when will value of ?

Anonymous User Maths Complex Numbers 23 May, 2020 74 views

## Let z, w be complex numbers such that z +  = 0 and zw =  Then arg z equals Let z, w be complex numbers such that z + = 0 and zw = Then arg z equals

Anonymous User Maths Complex Numbers 23 May, 2020 64 views

Let z1 and z2 be two roots of the equation z2 + az + b = 0, z being complex further, assume that the origin, z1 and z2 form an equilateral triangle, then what will be a2?

Anonymous User Maths Complex Numbers 23 May, 2020 69 views

If z and w are two non­-zero complex numbers such that |zw| = 1, and Arg(z) – Arg(w) = then zw is equal to

Anonymous User Maths Complex Numbers 23 May, 2020 72 views

Two particle of masses m1 and m2 are 'd' distance apart. Due to gravitational attraction they move towards each other. what is speed of m1 when their separation reduces to d/2.

Anonymous User Physics Laws of Motion and Friction 23 May, 2020 67 views

## Let z, w be complex numbers such that z +  = 0 and zw =  Then arg z equals Let z, w be complex numbers such that z + = 0 and zw = Then arg z equals

Anonymous User Maths Complex Numbers 22 May, 2020 56 views

Let z1 and z2 be two roots of the equation z2 + az + b = 0, z being complex further, assume that the origin, z1 and z2 form an equilateral triangle, then what will be a2?

Anonymous User Maths Complex Numbers 22 May, 2020 71 views

Consider a family of circles which are passing through the point (–1, 1) and are tangent to x-axis. If (h, k) are the co-ordinates of the centre of the circles, then the set of values of k is given by the interval-

Anonymous User Maths Circle 22 May, 2020 99 views

Three distinct points A, B and C are given in the 2–dimensional coordinate plane such that the ratio of the distance of any one of them from the point (1, 0) to the distance from the point (–1, 0) is equal to 1/3 . Then the circumcentre of the triangle ABC is at the point :-

Anonymous User Maths Circle 22 May, 2020 57 views

A and B are two fixed points and P moves such that PA = nPB where n != 1. Show that locus of P is a circle and for different values of n all the circles have a common radical axis.

Anonymous User Maths Circle 22 May, 2020 263 views