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Catalogs Discussion Forums -> Algebra -> What are the Discontinuous points of greatest integer function of x^2 at [1,2) ??? Answar-square ro -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

Catalogs Discussion Forums -> Algebra -> A simple question for IItians , but its too tough for me. -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
well given the choices definately its not gonna be B or D coz thet are negative also u can clearly see that the ans shd be less than 1 so its not C either so it has got to be A
Catalogs Discussion Forums -> Computer Science -> I have made my c++ project on hotel management in it i have asked to entered data displayed data sea -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
the ususal delete logic is to keep copying the info to another file exept for the thing u want to delete then rename that file u can have a class for a the one who stays which is inherited by hotel management and u can add features for if some one wanted to extend their stay u can add another class for worker and store their info ...........u know cotact salary post such stuff............again can use inheritance
Catalogs Discussion Forums -> Algebra -> How many 10 digit numbers can be made with odd digits so that no consecutive digits are same. -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
-,-,-,-,-,-,-,-,-,-first place has 5 options 2nd has 4 third has 4 and so on so 5*4^9
Catalogs Discussion Forums -> General Physics -> why we float on dead sea -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
it contains a lot of salt dissolved in it so density is high => boyuant force is high so we float...........
Catalogs Discussion Forums -> General Physics -> A 0.2 Kg ball is suspended by a thread of length 1 m. It is pulled aside until the thread makes an a -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

work done = energy stored = mgh = mg(1-cos30)if it is released then at the lower point energy is purely kinetic(wrt chosen datum) which comes from the stored energy so 1/2mv^2 = mgh and find v

EDIT: sorry dint see it was already answered............

Community shelf Community shelf -> Class 10 exams optional, grading system takes shape . comments -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
beleive me the gerading system does not reduce pressure........i increases it exponentally............i know coz i have studied under the mark based system and now under the grading based system...........in grading each and everything matters............u cant afford to skip any class test.........all assignments should be submitted............parnts and teachers have welcomed..........for them it just means that now children will study more so better..........i really feel bad for the students who are going to lose their childhood among the books.....well i can tell u this much whoever says that grading systm is better for sure...for sure has not underwent the grading system......there wont be any second chance damage done is done.........u mess up one time it reflects through out your life........this will bring u the hardworking......not necessarly the intelligent..........i can just pray for the sake of students that this disaster never occurs.............i just hope...........for the sake of the students..........
Catalogs Discussion Forums -> Algebra -> Find smallest value of N possible. -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
u can form 3^N N digit natural no.s using 6,8,9 now 3^6 = 729 so N=7
Catalogs Discussion Forums -> Algebra -> C0C1+C1C2+C2C3......................C(n-1)C(n)= -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

{(1+x)}^{n}=C_0+C_1x+C_2x^2+....C_{n-1}x^{n-1}+C_nx^n\\\\ {(1+x)}^{n}=C_0x^n+C_1x^{n-1}+C_2x^{n-2}+....C_{n-1}x+C_n\\\\ \text{Multiply the above equations......now the ans is the coeff. of } \\\\x^{n-1} \text{ in the expansion of } {(1+x)}^{2n} \text{ that is }2nC_{n-1}

Catalogs Discussion Forums -> Algebra -> help !!! -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
if u want more u can see as x->0 then f(x)->infinity now this cant be >=c for any real c..........u see the point.........
Catalogs Discussion Forums -> Algebra -> help !!! -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

\text{Let f(x)=} ax^2+\frac{b}{x}  according to the q the minima to this function should be c . but this does not have a minima. i guess the q should have been < = c in that case the relation would hav been c=f({(\frac{b}{2a})}^\frac{1}{3})

Community shelf Community shelf -> Mathematics Crazy Tactics-I -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
the 11 rule is nothing but the normal multiplication........
Community shelf Community shelf -> Need to be good both ways??? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
as far as i know........if u r through jee it is no prob to get 85% in boards.......
Community shelf Community shelf -> where has my smartness gone? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
verry verry true i myself am suferring now and trying to find a way out...........only for the past year dont know why.........i have become............messing my education...............
Catalogs Discussion Forums -> Algebra -> The eq of the plane which bisects the line joining (2,3,4) & (6,7,8) -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

i give the steps if still not able to solve ill post the sol

1)find the mid pt B of the 2 coord.

2)find the unit vector(m) joining the 2 points. simple

3)let A(x,y,z) be any point on the plane

4) let the vector joining A and B be r

5) now r.m=0 will give u the eq of plane

EDIT: as Yagyadutt Mishra sir says this for perpt. bisection

Catalogs Discussion Forums -> Algebra -> The rank of MOTHER when the letters of the word are arranged alphabetically as in the dictionary is. -> Go to message
This Post 7 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]

e,h,m,o,r,t

,No. of words starting with E = 5!

then the next is words starting with H = 5!

then the next is words starting with M E = 4!

then the next is words starting with M H = 4!

then the next is words starting with M O E = 3!

then the next is words starting with M O H = 3!

then the next is words starting with M O R = 3!

then the next is words starting with M O T E = 2!

                       M O T H E R

Catalogs Discussion Forums -> Algebra -> If 2z1/3z2 is purely imaginary then modulous of z1-z2/z1+z2 is -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
well take an example z1=i and z2=1 the given condition is satisfied now check what ans u r gettin........
Catalogs Discussion Forums -> Algebra -> If 2z1/3z2 is purely imaginary then modulous of z1-z2/z1+z2 is -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

\text{Say } z_1 \text{ is }  r_1e^{i\theta_1} \text{ and }z_2 \text{ is }  r_2e^{i\theta_2} \text{ so }\\\\ \frac{2z_1}{3z_2}=\frac{2r_1}{3r_2}e^{i(\theta_1 - \theta_2)}\\\\ \text{Now if that is imaginary then } \theta_1 - \theta_2  = (2n+1)\frac{\pi}{2}\\\\ \text{Meaning they both are perpendicular to each other so the mod of }\\\\ z_1+z_2 \text{ and } z_1-z_2 \text{ will be }\\\\ \sqrt{{|z_1|}^2+{|z_2|}^2}\\\\ \text{Hence the ans is 1}

Catalogs Discussion Forums -> Algebra -> The sum of n terms of the series 1+(1+3)+(1+3+9)+(1+3+9+27)+....... -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
good handwriting!!!!!!
Catalogs Discussion Forums -> Algebra -> The sum of n terms of the series 1+(1+3)+(1+3+9)+(1+3+9+27)+....... -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
that is correct
 
 
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