Recently Active Mathematics Questions

a straight line through a (-5,-4) meets the lines x+3y+2=0,2x+y+4=0 and x-y-5=0 at b,c,d respectively.......... if (15/ab)^2+(10/ac)^2=(6/ad)^2 then the equationof the straight line?? ...

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the number of ordered pairs (a,b) where a,b belongs to (-Ï€,Ï€) satisfying cos (a-b) =1 and cos (a+b) =1/e will be ??????????? ...

find the number of ways in which the digits of the number 125453752 can be rearranged such that no two 5's come together ????? ...

The sequence {yn}n≥1 is defined by y1=y2=1 , yn+2=(4k-5)yn+1-yn+4-2k Determine all integers `k` such that each term of this sequence is a perfect square ...

An integer sequence {an}n≥1 is defined by a0=0, a1=1, an+2=2an+1+an Show that 2k divides an if and only if 2k divides n. ...

A lady desires to give dinner party for 8 guests. In how many ways can the lady select guests for the dinner from her 12 friends, if tow of the guests will not attend the party together??? ...

the question is x2-√x/(√x)-x limit x tending to 1 plz solve this both by dirct derivative and 1st priciple 2)√tanx solve this by 1st principle ...

k is an integer, p is a prime no. such that x2+kx+p=0 has distinct +ve integral roots. Find the value of (k+p). ...

thanks a lot everybody ...

pl. try Q44 *Image* ...

sum (b) *Image* ...

the vol. of right triangular prism ABCA2B2C2 is 3. the position vector of the vertices of the base ABC is A=(1,0,1);B=(2,0,0)& C=(0,1,0) Q-1)the height of the prism= a)√3 b)√6 c)√8 d)none Q-2) the coordinate of vertex A ...

plz tell me if u do get da final ans. i know the type but somehow am missin out on one or da other case!!!!!!!!!!!!! Find the total no of 9 lettered words dat can b formed using da letters of " HINDUSTAN" such that neither of ...

if nine squares are chosen at random on a chess board,what is the probability that they from a square of size 3*3 ...

In a game , a man wins a rupee for a six and loses a rupee for any other number when a fair die is rolled. The man decided to throw a die thrice but to quit as and when he gets a six . Find the expected value he wins or loses ...

SHORTCUT NEEDED!!!! LET S(t) be the area inclimed betwn parabola y = x2 + 2x - 3 and da line y = tx +1, then wat are the values of t for least value of S(t)??? ans : t = 2, 32/3 ...

WHAT ARE NON INTEGRABLE FUNCTIONS? GIVE EXAMPLES. ...

x1, x2, x3, ... is defined recursively by x0 = 1, xn+1 = (3xn + 5xn2- 4 )1/2 Show that all these are integers! ...

If limx→0 [(1+λ) + 8e1/x] / [1+ (1-k)e1/x ]= 2, then λ+k =? ...

An urn contains 5red and 3white marbles.A marble is selected at random from the urn, and discarded two. 1)Probability of second marble being red is _____ 2)Probability of both marbles being of the same color_______ 3)Probabil ...

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MULTIPLE OPTIONS CORRECT The equation x2 + 2xy + x - 3 - y + y2 = 0 represents a conic with (A) eccentricity 1 (B) vertex (1.5,-1.5) (C) axis as x + y = 0 (D) length of latus rectum 1 ...

THIS ONE IS FRM DA FORUM ITSELF : If f(x) f'(x) f"(x)>0 for all x in R, prove that f(x) is a strictly increasing function CAN NE1 PLZZZ XPLAIN ME THIS EXPLANATION OF CELESTINE f'x never 0 , so either strict inc or strict d ...

prove that summation k=1 to k=n-1 (n-k)cos(2kpi)/n = -n/2 for all n≥3 , n belongs to integer. ...

Q21) lim { [x]+[2x]+[3x]...............[Nx] } / N2 N→∞ a) 1/2 b) does not exist c) 1 d) None of these Can sum1 first of all plz tell me if [] in da que denotes gr8est int functn or not??? Then i shall re-try, coz i earlie ...

i need the detailed solution for the derivative of: tan x ...

1)can u please give me a easier proof for the area of parallelogram whose adjacent sides are represented by a→and →b 2)can u please derive me the volume of the tetrahedron using vectors??? ...

the pole of st. line 9x+y-28=0 wrt the circle; 2x2+2y2-3x+5y-7=0 is a)(3,1) b)(1,3) c)(3,-1) d)(-3,1) plz give idea abt. this & how 2 solve various prob. on this ...

calculate the cosine of A in the Δ ABC where A(1,-1,2) B(6,11,2) C(1,2,6) ...