Recently Active Questions

Graph of {x}{y}={xy} ...

This question was posted by Bhatt sir about more than a year back in another forum: Let f(x)=\sin(x^3) Determine all n for which the n-th derivative of f(x) is non-zero at x=0. ...

A wave pulse is passing on a string with a speed of 40cm/sec. in the negative x direction. It has the maxima at x=0 at t=0. Where is the maxima located at t=5?? ...

A hot body placed in air is cooled down according to newton's law. The rate of decrease of temperature being K times the temperature difference from the surrounding. Starting from t=0, find the time in which the body will los ...

Can any one plz expalin me wats Centre of mass frame and how to solve problems using it??? ...

Compute the area between y2=x3/(2a-x) and its asymptote. ...

how to do summation Tr= 1/ r^r.............. find S∞ ...

{x}={ y } ...

Draw the graph of x^3+y^3+3xy=1 This one is not very easy.. (But this is not the toughest one either) ...

q no 1) let n>=2 be a fixed integer....... f(x) be a bounded function defined in f:(0,a)→R satisfying f(x)= \frac{1}{n^2}\sum_{r=0}^{(n-1)a}{f(x+\frac{r}{n})} then f(x)= a)-f(x) b)2f(x) c)f(2x) d)nf(x) ...

If sinA+ sin B + sin C = cos A + cos B + cos C = 0 Prove that : 1) sin 3A + sin 3B + sin 3C = 3sin (A+B+C) 2) cos 3A + cos 3B + cos 3C = 3cos (A+B+C) ...

*Image* the answer is 4.......and note its AB=>0 if u r not able to see properly ...

*Image* ...

If by any change of axes and without change of origin, the quantity ax + 2hxy + by becomes, a'x' + 2h'x'y' + b'y' , the axes being rectangular in each case , then prove that, a + b = a' + b', and ab - h2 = a'b' - h'2 . ...

Q.If Z1 & Z2 are two complex no such that Z2≠0 and whole mod of Z1-1/Z1+Z2=1.Then prove dat i*Z1/Z2=K,where K is a real no.Find the angle between the lines frm the original to the points Z1+Z2 & Z1-Z2 in terms of K????????? ...

x+y/x-y =1 This might seem very stupid. but still i think this is slightly relevant... Btw I am starting back the Graph of the day section... I was short of very good basic graphs after having posted over 100 graphs... The ot ...

HEY, PLEASE SOLVE THIS PROBLEM: Todd's bike has a combination lock. To unlock his bike Todd has a secret number that is greater than 100 but less than 1000. Todd's secret number is a square number and the cube root of his sec ...

A positive integer n(>1)can be written as a product of power of distinct primes in one and only one way,except the order of factorization. i.e n=p1a1 p2a2......pkak. where 1<p1<p2<.....pk where pi's being prime(i= ...

*Image* ...

A sample of 0.15 of the compound [Pt(NH3)xBry]+z . z Br- , ignited and heated to decomposition produced 0.0502 gm of Pt. a second 0.15 gm sample was dissolved in water and titrated rapidly with 0.01 M AgNO3 solution. 51.50 ml ...

1 gm of a mixture containing equal no. of moles of carbonates of two alkali metals, required 44.40 ml of 0.5 N HCl for complete reaction. The atomic weight of one metal is 7, find the atomic weight of the other. Also calculat ...

Consider a collection of a large no. of particles , each with speed v. the direction of velocity is randomly distributed in the collection. Show that the magnitude of the relative velocity between a pair of particles averaged ...

if the eqn ax^2+2bx-3c=0 has non real roots and 3c/4<(a+b),then c is always -------- ...

if the eqn ax^2+2bx-3c=0 has non real roots and 3c/4<(a+b),then c is always -------- ...

Laila has to cross a track of ice to reach the other side of the river to meet Majnu as soon as possible... :P Now laila has 2 ways either to skid through the first track or the 2nd one.. The image shows the vertical section ...

Two players of equal skill, A and B, are playing a set of games; they leave off playing when A wants 3 points and B wants 2. If the stake is Rs. 16, what share ought each to take? ...

If the tangent drawn from the point (t2,2t) on the parabola y2=4x is same as the normal drawn at a point (√5 cosφ, 2sinφ) on the ellipse 4x2+5y2=20, Find the values of t and φ. ...

PLEASE SIR,CAN YOU FIND A SOLUTION TO THIS? (cos p - 1) x^2 + cos p x + sin p = 0, solve p for x belonging to real numbers? ...

If x=cosec(tan-1(cos(cot-1(sec(sin-1a))))) and y=sec(cot-1(sin(tan-1(cosec(cos-1a))))) where 0≤a≤1.Find relationship between x and y ...

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