Recently Active Questions

find all tangents to the curve y=cos(x+y), -2∩≤x≤2∩ that are parallel to the line x+2y=0 ...

Given : 2/1!9! + 2/3!7! + 1/5!5! = 2m/n! Find the orthocentre of the Δ with sides x-y+1=0, x+y+3=0 and 2x+5y-2=0 in terms of m and n. Very Good Question....Try it... :-) ...

find the equation of the normal to curve y=(1+x)y + Sin-1(sin2x) at x=0 ...

if x is increasing at the rate of 2cm/s at the instant when x=3cm and y=1cm ,at what rate y must be changing in order that the quantity (2xy-3x^2y)shall neither be increasing nor decreasing .... if S={(a,b)εR*R:x=a,y=b,(2xy- ...

Let a and b be rel numbers such that sin a+sin b=(√2)/2 and cos a+cos b =(√6)/2 then sin(a+b) will be ???? ...

If the resultant of all the external forces acting on a system of particles is zero, then from an inertial frame, one can suresly say that A) linear momentum of the system does not change in time B) Kinetic energy of the syst ...

can ne1 plz tell me wazz relativistic momentum n wazz relativistic relason bet kinetic energy and linear momentum ...

My niece is in 10th this year and wants to go for IIT coaching. Since I am based in A.P., a coaching centre in this state would be preferable though my mind is not completely closed on a centre outside if it is vry good. Amon ...

an unbiased die,with faces numbered 1,2,3,4,5,6 is thrown n times and list of n numbers showing up is noted.what is the probability that among the numbers 1,2,3,4,5,6 only three numbers appear in the list ...

Set of all points where x2{x} is differentiable? Plz post the solution.. ...

I was taught that while drawing the resonating structure, the structure which has more charge separation has more energy. Please explain this. I thought that energy decreases with increase in separation ...

A disc slides down an inclined plane of 75°. The coefficient of friction is 0.2. Assume that the mass of the disc is 1kg and the radius is 50cm. Calculate the total heat produced when the disc comes down by a height of 1m. ...

If ellipse has major axis length 2 2 unit and the angle between the lines joining the focus to the minor axis is 90°,then calculate the length of semi latus rectum ...

Find the minimum value of a^2+b^2 given that x^4+ax^3+bx^2+ax+1=0 has only real roots... (The question is not very very difficult question.. if you recall the trick often used in solving 4th degree polynomials...) ...

Ques1) The value of lim x→0 { cos (m2+n2) x } mn / (m2+n2)x (a) e mn (m2+n2) (b) e- mn (m2+n2) (c) e- mn/2 (m2+n2) (d) e mn/2 (m2+n2) Ques2) lim x→0 [sin -1 x / tan -1 x ] , whre [.] denotes the greates integer function ( ...

what is order of activation towards electrophilic substitution among -aniline, monoalkyl sustituted aniline & dialkyl substituted aniline...please state the reason too ,i meant among -NH2 ,-NHR,-NR2. ...

whats the formula that gives the no of stereoisomers a compound will form??? for the following tell the no. of stereoisomers H3C(OH)HC-CH=CH-CH(OH)CH3 ...

If lzl=1 ,prove that the points represented by \sqrt{\frac{1+z}{1-z}} lie on one or the other of two fixed perpendicular lines ...

(1) Min. value of (x2+y2)+ (x2+(y-1)2) = ...

The quantum numbers +1/2 and -1/2 for the electron spin represent A. rotation of the e in clockwise and anti-clockwise direction respectively. B. rotation of the e spin in anticlockwise & clockwise dir respectively. C. magnet ...

f(x) = Sin x + cos( 4-a2 x).The fundamental frequency of f(x) is 4Ï€ ,then value of a is -- A. 15 /2 B. - 15 /2 C. 7 /2 D.- 7 /2 ...

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x\frac{dy}{dx}+\left({\frac{dy}{dx}}\right)^2= y A good one.. (I couldnt solve for the first few minutes before i was tempted to see the solution :D.. But now i wish i had not seen the solution and tried it myself :P ...

A good differential equation... (1+x\sqrt{x^2+y^2})dx+(-1+\sqrt{x^2+y^2})ydy = 0 ...

Simple one a) (x+y)(dx-dy)=dx+dy Simple one b) x\left({\frac{dy}{dx}}\right)^{2}+(y-x)\frac{dy}{dx}-y = 0 Copied Questions Series but good ones for JEE :P :D ...

Q 1) (2x^{2}+3y^{2}-7)xdx-(3x^{2}+2y^{2}-8)ydy = 0 Copied Questions Series but good ones for JEE :P :D ...

*Image* the strip is metallic n veryy thin n infinitely long plz use amperes law current though the plate is i........ the wholk ething is in 2D plane... PLZ PLZ SOLVE BY AMPERES LAW!!] ...

can anyone tell me how to find out if a molecular orbital has nodal plane or not pls ...

One of the bisectors of the angle between lines a(x-1)2+2h(x-1)(y-1)+b(y-2)2=0 is x+2y-5=0 The other bisector is ???? ...

Solve for real values of x \left( \int_{0}^{1}\frac{1}{t^{2}+2t\cos a+1}dt\right)x^2+\left(\int_{-3}^{3}\frac{t^{2}\sin 2t}{t^{2}+1}dt \right)x+2=0 Saw this on another forum... not very tough... only looks dirty... ...