Recently Active Mathematics Questions

HELP HELP HELP......... ------------------------------------------------------------------------------------------------------------------------------------- I just can't understand Probability from my class Xth book....:P Pl ...

*Image* Please Give Detailed Solution Thanks In Advance ...

1. Find the no. of three element set of positive integers (a,b,c) satisfying the abc = 2310 2. Find the no. of distinct throws that can be made with 'n' 6 faced fair dices which are indistinguishable among them? NOTE: Please ...

Sir, I need help with those special type of questions like - 1. Find the maximum no. of planes in which n circles can divide a plane? 2. Find the maximum no. of point of intersection of n circles and n straight lines? 3. Tota ...

The greatest integer n such that (42)n divides 2011! is (A)330 (B)331 (C)332 (D)333 ...

is rank of matrix in jee syllabus or not ...

$Solve the equation\\\\ $tan^{-1}(x-1)+tan^{-1}(x)+tan^{-1}(x+1)=tan^{-1}(3x)$ ...

I already knw da answers to the followin questions. I am interested 2 knw da solution.Pls solve dem guys. I) |(a x b).c| = |a||b||c| ,if (1)a.b=b.c=0 (2)b.c=c.a=0 (3)c.a=a.b=0 (4)a.b=b.c=c.a=0 II) If b and c are two non-colli ...

along line y=x-1 is: Q2)lim(x→ ∞ ) [aoxm + a1xm-1 + a2xm-2 + ....+am-1x+am] [b0xn+ b1xn-1 + b2xn-2 + ...+bn-1 x +bn ] when a0b0 >0 is infinity when a0b0 <0 is - infinity Can someone pls explain how??? Q3)lim (x → ...

Find all local strict maximum of the function F(x) = 0, x irrational = 1/q,x= p/q in lowest terms ...

prove the expression is non zero if p≠q≠r pq(p-q) + qr(q-r) + rp(r-p) sort of doubt actually :) ...

yaar i saw a problem today in which the author found projection of a vector on another vector turning out negative.but in final answer he wrote tht the projection is=+vew of tht value obtained....... now here is my doubt!!!! ...

if the direction ratios of two lines are given by 3lm -4ln + mn = 0 and l + 2m + 3n = 0 , find the angles between them ...

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in book its given that the number of ways to distribute 3 identical A's into 2 different groups ( when empty groups are allowed) is 4, which is correct.... also the no. of ways to distribute and arrange A,B,C into two differe ...

i hav a doubt in calculating curved area and volume of a cone . let height =h and radius of base = r , where tanθ = r/h now my doubt is : suppose vertex of cone is origin and height is along x axis then we can write curved a ...

Let a, b, c, d, e be real numbers satisfying a+ 16b+ 81c + 256d + 625e = 1 16a + 81b + 256c + 625d + 1296e = 12 81a + 256b + 625c + 1296d + 2401e = 123 256a + 625b + 1296c + 2401d + 4096e = 1234 625x1 + 1296x2 + 2401x3 + 4096 ...

*Image* in this sum HA, EB, FC, GD bisects the angles DAB,ABC, BCA, CDA respectively. P.T. EFGH is a rectangle. I could prove it. But i cant prove Efgh will/won't be a square. ...

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in calculating curved area and volume of a cone . let height =h and radius of base = r , where tanθ = r/h now my doubt is : suppose vertex of cone is origin and height is along x axis then we can write curved area = ∫2πy ...

f(x)=x+∫01(x2y+y2x)dy find f(1)(x and y are independent variables) ...

Q:=> \texttt{Prove that for all z with |z|=1, the relation given is true}} \sqrt{2} \leq |1-z|+|1+z^{2}| \leq 4 ...

Please solve this questions....!! I'll be grateful for your this act of kindness.....!! and one more thing.... please do show the steps... :) 1. The number of pairs of reals (x,y) such that x = x2 + y2 and y = 2xy is (A) 4 (B ...

Limn→∞1/n(2.5.8.11........3n-1)1/n ...

can we say that if |z1|= |z2|= |z3| and z1 + z2 + z3 = 0 one of z1 ,z2,z3 is real? is it obvious that z1, z2,z3 are the roots of x3= |z1|3 they ll be the vertices of an equilateral triangle but are above things always true? p ...

Q:=> \textup{Prove that amongst 10 successive natural nos. there are always atleast} \textup{one and atmost four numbers that are not divisible by any of the numbers 2,3,5,7} ...

1)find number of real roots of \sum_{r=0}^{r=2n}{}x^r/r! =0 ,(n\epsilon N) 2)Find the number of cubic polynomial p(x) with integral coefficients such that for three distinct integers a,b and c, p(a)=b,p(b)=c and p(c)=a source ...

if in a equilateral triangle three coins of equal radius are placed without overlaping then what is the radius of each coin ...

Let aN be defined as a1 = 0 and aN =(1-(1/N^2))aN-1 -(1/N^2) N is natural no find a2010 ...

1. \left(x-1 \right)\sqrt{x^{2}-x-2}\geq 0 ...