The area of the region bounded by a2 y2 = x2 (a2 − x2) in x y plane is
Let z₁ and z₂ be nth roots of unity which subtend a right angle at the origin. Then n must be of the form
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The area bounded by the parabola y2=4ax and the straight line y=2ax is
The surface area of a cone including the base is 4π sq.ft., then the dimensions of the cone when the volume is maximum are
If the function f is defined by hen at what points is f differentiable
Which one of the following differential equations represents the system of circles touching y-axis at the origin ?
The order of differential equation (d2y/dx2)3=(1+dy/dx)1/2 is
If f, g : R → R, f(x) = (x + 1)2 g(x) = x2 + 1 then (fog) (-3) =
Negation of the conditional , ' if it rains , I shall go to school ' is
If A is a square matrix and I is the unit matrix of the same order 3 x 3 , then A .(adj A) is
There are five roads from a village to a town. In how many ways can a villager return after reaching the town?
If A and B are such events that P(A)>0 and P(B)≠1, then P(A̅/B̅) is equal to
If B is a non-singular matrix and A is a square matrix, then det (B-1AB) =
Each coefficients in the equation ax2+bx+c=0 is determined by throwing an ordinary die. The probability that the equation will have equal roots is
A coin tossed until a head appears or until the coin has been tossed 5 times. If a head does not occur on the first two tosses, then the probability that the coin will be tossed 5 times is
If the side of a triangle are 13, 14, 15, then the radius of the incircle is
Sum of all terms of a G.P. is 5 times the sum of odd terms. The common ratio is
If a,b are odd integers, the roots of the equation 2ax2+(2a+b)x+b=0, a≠0 are