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If x can be any real number, then find the value of \frac{(x-a)(x-b)(x-c)}{(d-a)(d-b)(d-c)}+\frac{(x-b)(x-c)(x-d)}{(a-b)(a-c)(a-d)}+\frac{(x-c)(x-d)(x-a)}{(b-c)(b-d)(b-a)}+\frac{(x-d)(x-a)(x-b)}{(c-d)(c-a)(c-b)} - 1 ...

*Image* P.S the springs are attached to string and x=a ...

a person is in a room whose ceeiling and two adjacent walls r mirrors.....how many images r formed ...

U hav tied a weight W by a string as shown in d fig . Now u and ur frnd start pulling the string from both ends and try to straighten the string . What will be the tension in the string for wich the string completely becomes ...

If the orthocentre of ΔABC formed by the intersection of lines 2x + 3y - 1 = 0, x + 2y - 1 = 0 & ax + by - 1 = 0 is origin, find a, b. ...

An object is placed in front of a concave mirror of focal length 'f' as in figure find the size of image and its postion. *Image* The actual dbt is abt paraxial rays.We assumed this for our entire optics chapter,Well how is u ...

Q1 limx→0[ ex-1/x ] Q2 limx→0 { ln(1+x)/x } where [.] =GINT and {.} is fract part ...

1) STATEMENT 1 : A charged particle is accelerated by a potential difference V . The electron enters perpendicular into a uniform magnetic field.The magnitude of angular momentum of the electron about centre of trajectory fol ...

a circle is inscribed in a equilateral triangle of side a.find the area of any square inscribed in the circle. ...

Anyone appearing for any of these exams? 1) ISI 2) NEST 3) CMI Can u guys tell me when will the ofrms come out for these - and where 2 download them from? ...

FIITJEE HCT-6 Qsn..... If a central conic is represented by the std form ax^2+2hxy+by^2=0 with the condition that tangents at any point have a constant area (=k) of the triangle that they form with the co-ordinate axes, then ...

http://targetiit.com/videos/ what is that???????? ...

what are many-many maps......plz give definiton and an example!!!!!! ...

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I have been selected for kvpy interview in the stream sb+2... I have no idea how the interview will be.. can I know how will be the interview for stream sb+2..... Its urgetn plz help.. ...

If xy+yz+zx = 3, prove that \sqrt{1+x^4} + \sqrt {1+y^4} + \sqrt {1+z^4} \ge 3 \sqrt 2 ...

show that following hold for x include in R *Image* ...

1.An unlimited number of red, white, blue and green balls are given. The number of ways of selecting 10 balls is ? 2.The greatest possible number of points of intersection of 8 straight lines and 4 circles is? ...

1) If ( a , a2 ) be a point lies inside the triangle having sides along the lines 2x+3y=1 , x+2y = 3 & y = mx - 3m where m belongs to (-∞,-1/2) u (0,∞) then a lies in the region (A) a ε R (B) a ε (-3/2 , -1 ) (C) a ε ( ...

In the circuit show all the ammeters are ideal. 1) If the switch s is open find the current through all the ammeters and the pd accross the switch. 2)If the switch is closed find the current through all the ammeters . *Image* ...

A bird sitting in a wire cage which is hanging from a spring balance.if bird starts flying inside the cage,reading of spring balance will remain unchanged/be less/more than earlier? ...

A rod of mass 2m and length 2l is bent at its midpoint making 90° angle find the moment of inertia of the system about an axis passing through the point of bent symmetrically and making minimum angle of 45° with the plane o ...

\left ( l-m \right )^2 + \left ( p-q \right )^2 = 9 ...

more than one correct Q1 photoelectric effect supports quantum nature of light a)there is min frequency below which photoelectrons are emmited b)max KE of photoelectons depends only on frequency of light and not on intensity ...

*Image* A rod hinged at one end is released from the horizontal position as shown. When it becomes vertical its lower half separates without exerting any reaction at the breaking point. Then find the maximum angle θ made by ...

let f(x) be a differentiable function satisfying (x-y)f(x+y)-(x+y)f(x-y)= 4xy(x2-y2) for all x,y belongs to R . f(1) = 1 then.... 1. the area of the region bounded by the curves y=f(x) and y=x2 is.... 2. the value of ∫-12 f ...

f(x)=\frac{1}{1+x} a)find a no c such that f(cx)=f(x) b)for wat values of c f(cx)=f(x) for 2 values of no x.... ...

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*Image* Extension to my question of 04-04-09.........find the velocity of the system after all possible perfectly inelastic collisions all the spheres have equal mass..... they have velocity whose magnitude is written over th ...