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Let S = \left\{(x,y): |||x|-2|-1|+|||y|-2|-1|=1 \right\} . If a wire is made out of S, then the length of such wire is? Source : FIITJEE PT II (P1) Q.1 (Maths) ...
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Well ,the title is obvious. Any thing to share. Personally, I feel that this year's paper was DIFFICULT than the Previous years one. The questions which were doable were lenghtly (not all I mean) and some were really outsmart ...
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*Image* The figure shows mass m moves with velocity u. Ring is restricted to move on smooth fixed horizontal rod. Velocity of the ring at that moment? I thought the answer to be u/2 but the correct answer is 2u. This can happ ...
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If the equation y=1+x-2√x represents a parabola then coordinates of vertex are? Please explain how you solved it! Answer is (1/4,1/4) ...
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if the curves ax2+4xy+2y2+x+y+5=0 and ax2+6xy+5y2+2x+3y+8=0 intersect at 4 concyclic points then the value of |a| is ??? ...
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If the equation y=1+x-2√x represents a parabola then coordinates of vertex are? Please explain how you solved it! Answer is (1/4,1/4) ...
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if a particle covers half of distance with 30m/s. Then what should be the velocity of particle at other half distance,so that its average velocity will be 60m/s. ...
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Can anyone tell me whcih mechanism u need to know for jee in organic chem in aldehydes and ketones just the names would do enough . Thank you ...
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We solve many circuits where many DC sources (eg cells) are connected in series/parallel. Have you ever wondered where you could do the same with AC Sources as well? Check out! It's really interesting. ...
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There is a rectangle with m vertical lines and n horizontal lines (taking the edges too). Find the no.of ways in which a pencil can travel from the North-West to the South-East corner going through the shortest possible dista ...
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*Image* i am getting c) but ans. given is d) ...
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the eqn 8x^2 -14xy +3y^2 +10x +10y -25=0 represents adjacent sides of a ||ogram whose diagonals intersect at the points(3,2)...find the eqn of other 2 sides ,.... ...
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If cosα + cosβ + cosγ = sinα + sinβ + sinγ, then prove that i) cos2α + cos2β + cos2γ =0 & ii) sin2α + sin2β + sin2γ =0 ...
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Evaluate: ∫01 xa-1/ln x dx ...
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\int_{0}^{\propto }{\frac{sinx}{x}} ...
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\int_{0}^{\propto }{\frac{sinx}{x}} ...
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\hspace{-16}$Calculate $\mathbf{\int_{1}^{\infty}\left(\frac{\ln x}{x}\right)^{2011}dx=}$ ...
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A resistor of resistance R and temp. coeff. of resistivity=α is connected in parallel with a resistor of resistance 3R and temp. coeff. of resistivity=2α.Find equivalent α. ...
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I have posted this write up on facebook... You can have a look if you want... To be able to see it you need to like this page first (the story has been posted in this page): http://www.facebook.com/i4s.co.in Then the link to ...
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The electron in a hydraogen atom makes transition n1 to n2 ;n1&n2 principal quantum numbers of two states . assume the bohr model to be valid . the time period of the electron in initial state is 8 times that in the final sta ...
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a particle of mass M at rest decays into two particles of masses m1 &m ,having nonzero velocities . the ratio of the de- Broglie wavelengths oof the particles ,λ1/λ2 = ...
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a particle of mass M at rest decays into two particles of masses m1 &m ,having nonzero velocities . the ratio of the de- Broglie wavelengths oof the particles ,λ1/λ2 = ...
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Q. An electron in the ground state of the He atom joins the Helium nucleus to form He+ ion. Assuming that electron had zero kinetic energy after the transition, find the wavelength of the photon emitted. ...
