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Q. If α,β are the roots of quadratic equationnn ax2+bx+c, then find the equation whose roots are (α2-β2)(α3-β3) and α2β3+α3β2 ? ...

i saw dis question in j.d.lee...there isn't any answer given... it says-a transition element usually exhibits higher oxidation state in its fluorides than it does in its iodides. a detailed explanation will b of great help.:) ...

3 parallel metallic plates each of area A. charges q1,q2,q3 are given to them find the resulting charge distribution on the six surfaces *Image* i dont know how to approach please help ...

A clock face has charges -q,-2q,-3q,......-12q fixed at corresponding numerals on the dial .The clock hand do not disturb the net electric field due to point charges. At what time does the hour hand point the direction of net ...

in the geometrical method for solving projectile, how do we calculate the velocity with which the projectile hits the ground....? ...

IN A RIGHT TRIANGLE ACB, RIGHT ANGLED AT C ANGLE BISECTORS OF A AND B MEET BC AND AC AT P AND Q RESPECTIIVELY. M AND N ARE FEET OF PERPENDICULARS FROM P AND Q ON AB. FIND ANGLE MCN. ...

Prove the expansion of sin(A+B) in as many ways as you can... Simpler proofs fetch higher reward ;) ...

Ques. Pure O2 diffuses through an aperture in 224 seconds. whereas a mixture of O2 and another gas containing 80 % O2 diffuses from the same in 234 seconds. What is the molecular weight of the gas? ...

1) Solution of inequality 2|x+1| > x+4 contains which interval? 2) If R is a relation from a finite set A having m elements to a finite set B having n elements, then find the number of relations from A to B.(with proof) Fu ...

can some1 please suggest me a good book for organic chem having many questions ( with hints or solutions) and fairly decent theory...for theory mainly ill refer my notes ...i need something for practice...and yeah solutions/h ...

Why HClO3 Behaves as a stronger acid than HClO? Can anyone explain me the Slater's Rule of Effective nuclear charge? ...

\textrm{Let }f:\mathbb{N}\rightarrow \mathbb{N} \textrm{be a function such that }f(n+1)>f(n) ; f(f(n))=3n\textrm{ for all n} \textrm{Evaluate }f(2001) ...

How do u rate Veltech Technical university in all respects? ...

x[y]=y[x] find x and y given that x≠y and x,y > 0 plz solve this mathematically ...

\cot^{-1} \frac{y}{\sqrt{1-x^{2}-y^{2}}}=2\tan^{-1} \sqrt{\frac{3}{4x^{2}}-1}-\tan^{-1} \sqrt{\frac{3}{x^{2}}-4} &\\\\ \text{Q. Express the above as a rational integral equation between x and y.} My attempt went dirty after a ...

1. All the three roots of equation x3 –- 3x +1 = 0 lie on the interval (A) [–2, 0] (B) [–1, 1] (C) [–2, 2] (D) [–1, 2] 2. If ax2 + bx + c, a, b, c belog to R has no real zeros and if a + b + c < 0 then (A) c > 0 (B ...

"Gravity cannot be held responsible for people falling in love." -- Albert Einstein ...

→ → → → when A * B (A cross product B)= |A||B|sinθn(unit vector) the direction of the unit vector is taken like this *Image* then my problem is,why the direction of the unit vector is not taken in this direction? *Im ...

On full moon day, moon rises exactly when sun sets, say 6 p.m. in the month of June. At what time the moon will rise on very next day? a) 12/14 hours after 6 p.m. b) 14/12 hours after 6 p.m. c) 14/12 hours before 6 p.m. d) at ...

I want to know how to start preparation for NSEP? Please tell me books and which specific topics to prepare? ...

please help me proof this one....The area formed by the three intersecting line y=m1x + c1, y=m2x + c2, y=m3x + c3.......is 1/2 Σ[ (c1-c2)2/(m1-m2) ] how to proof this one??? ...

Whoever has finished studying the whole syllabus of IIT JEE can just check out the extended periodic table......... *Image* ...

is jadavpore university (mechanical) better than NIT Trichy (instrumentation/civil/chemical) ? ...

Q. If the roots of the equation ax2+bx+c=0 , are of the form α/α-1 and α+1/α , then the value of (a+b+c)2 is? [ans - b2-4ac] I got the answer by putting any value of alpha but how to solve it in subjective form ...

how to determine the components of mg of a block on an inclined plane...???? wat will be its θ ...? ...

Let f(x+a) = 1/2 + f(x) - (f(x))2 and 0<=f(x)<=1 Then prove that period of y=f(x) is 2a . ...

Q . Solve: cos-1 x2-1/x2+1 + tan-1 2x/x2-1 = 2 π/3 I'm getting ± 3 but the book says 3 , 2 - 3 ! [7] ...

If earth's escape velocity is 25,000 mph, the moon is 250.000 miles away, why did it take 75 hrs to get there? at 25,000 mph it should only take 10 hrs to the moon ...

$\textbf{The equation $\mathbf{x^4+ax^3+bx^2+ax+c=0,a,b,c\in\mathbb{R}$} }$\\\\ $\textbf{has all real roots . Then Prove that $\mathbf{\sqrt{|1-b+c|}\geq 1+\sqrt{|c|}}$} ...

1. A particle moves in a region having uniform magnetic field and a parallel, uniform electric field. At some instant, the velocity of the particle is perpendicular to the field direction. The path of the particle will be a) ...