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A point moves such that the sum of the squares of its distances from two intersecting straight lines is constant. a)identify which conic it is b)find the eccentricity of the conic in terms of the angle between the straight li ...

1. In a tri ABC the median AD and the altitude AM divides the angle A in three equal parts.Show that \Delta (cos A/3.sin2A/3) = 3a3 /128R . 2. In a \Delta abc the lengths of the bisectors of the angles A, B and c are x,y and ...

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Child labor is eating up the world from inside and we are not even noticing. We have been blessed to have had a good education-thanks to our parents.. But then again there are some children in this country who can not even wr ...

A projectile is fired from the ground and it bursts at the highest point and explodes into two halves.We apply law of conservation of momentum in horizontal direction.Gravity is purely vertical , so we have no problem conserv ...

*Image* all surface are roughf except the horizontal one.prove tha cofficent of friction >tan[(pie-alpha)/4] to keep the system at rest?? ...

Here's a doubt from my XI days that hadnt been solved till recently possibly bcz i hadnt given much though abt it. THe question is as follows Q. Consider a smooth rod revolving about one of its ends on a horizontal frictionle ...

re^{-r/2}cos\theta =constant where r is the radial distance of the point from origin and theta is the colatitude (angle btw the radial vector and the one pointing towards the z coordinate of the point)) ...

A class test has maximum marks equal to 50 . It should contain 7 questions each having marks in the range of 2(min. marks for a ques.) to 14(max marks of a ques.). Find the possible number of ways to prepare the test. ...

A smooth wedge of mass M with a small block of mass m at the highest point of its inclined surface is released from rest on a fixed smooth horizontal surface, as shown. Initially block is at rest with respect to the wedge sur ...

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∫ dx/x22(x7-6) plzzz solve this frnds... ...

PLEASE GIVE ME SOLUTION OF THE PROBLEM IN THE LINK http://www.targetiit.com/iit-jee-forum/posts/capacitors-ques-17240.html ...

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hello guys! I am preparing for IIT JEE'11. I am a bit confused about whether to take test series or not?If yes, which offer ONLINE TEST?Can we still register or all registrations closed? ...

Hey friends...plz help me in this..... f(x) = x6 + ax5 + bx4 + cx3 + dx2 + ex + f f(1) = 1, f(2) = 2, f(3) = 3, f(4) = 4, f(5) = 5, f(6) = 6 then f(7) = ?? ...

*Image* dont know where i am making the mistake but i am getting something like this 1+\tan(\theta +\phi)\tan(\phi)=0 ...

A train has to stop at any 3 stations in the shown fixed lot such that no two stations are adjacent. Find the number of ways this is possible. *Image* ...

Q 1 A farmer has four straight pieces of fencing: 1, 2, 3, and 4 yards in length. What is the maximum area he can enclose by connecting the pieces? Assume the land is flat. ans= 2 6 yards ...

show thet the length of the radius vector of the ellipse x2/a2 + y2/b2 =1 drawn in the direction making an angle θ with the positive directtion of x-axis is √( a2b2/b2cos2θ+a2sinθ ) Also show that the sum of the reciproc ...

If a proton moves with a velocity 'v' parallel to a current carrying wire,a magnetic FORCE acts on it.If the same particle is seen from a frame moving with an identical velocity in the same direction then.... 1)Will the magne ...

Q1->the total number of solution of sin 3.14x=|log|x||??(3.14=pie) Q2->what is odd and even extension?? Q3->total number of ways of factorising the number of 676 in 2 factors that are prime to each other?? Q4-> to ...

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If two circle touch each other, at their highest or lowest points, and a straight line be drawn through that point to meet both circles, show that the time of sliding down form rest down the portion of this line intercepted b ...

1)A shell is fired from a cannon with a velocity V at an angle θ with the horizontal direction. at the highest point in it path it explodes into two pieces of equal masses. One of the pieces retraces its path to the cannon. ...

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