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#1 Re: Help Me ! » random questions » 2015-11-03 21:22:38

yes bob this was what it meant.

#2 Help Me ! » random questions » 2015-11-03 16:42:04

Replies: 5

If n is a positive integer and

is a cube root of unity, then find the number of possible values of

#3 Re: Help Me ! » questions from integration » 2015-09-03 13:19:02

thanks. It was really very well explained.
well what are the things that should come in our mind for making substitution when we encounter such problems?

#4 Re: Help Me ! » questions from integration » 2015-09-01 14:01:06

yes I solved it now. Thanks.

here comes another question:-

#5 Re: Help Me ! » questions from integration » 2015-08-28 19:15:53

I tried integrating left or differentiating right but it became lengthy.
bobbym, what's EM method?

#10 Re: Help Me ! » functions » 2015-06-06 04:25:32

Got it but with patience.

thank you math9maniac and bobbym.

#11 Help Me ! » functions » 2015-06-04 15:41:49

Replies: 10


and f(1)=2,f(2)=5,f(3)=10,f(4)=17, Then find product of digits of f(5).

p.s. I am getting f(5)=26 and hence the answer 2*6=12 but unfortunately it's not the correct answer.Help!

#12 Re: Help Me ! » quadratic polynomial » 2015-05-07 01:15:53

well I came up with the same solution yesterday as olinguito.
It was quietly easy.
Thanks for helping me out.

#13 Re: Help Me ! » quadratic polynomial » 2015-05-02 03:54:25

Well the answer given is p≥ -1/4.

#14 Re: Help Me ! » quadratic polynomial » 2015-05-01 15:09:12

Here is one more question on quadratic equations.

Assume that p is a real number.Find the possible values of p in order to have real solutions for


I shifted x^1/3 to RHS and cubed both sides and tried to simplify it to a 2 degree equation so that I could apply D≥0 for real roots, but was unsuccessful in making the equation quadratic.
Pls help.

#15 Help Me ! » quadratic polynomial » 2015-04-24 23:18:27

Replies: 23

Let P(x) be a quadratic polynomial with real coefficients such that for all real x the relation 2(1+P(x))=P(x-1)+P(x+1) holds.
P(0)=8 and P(2)=32.
If the range of P(x) is [m,∞), then the value of m is?

#16 Re: Help Me ! » permutation and combination » 2015-04-21 14:40:14

oh yes. smile

I've found it is usually a good thing to agree with bobbym.

no doubt about it.

#17 Re: Help Me ! » permutation and combination » 2015-04-21 00:54:37

But the ways in which SS and SSS will come together will also include the cases when CC are not together.

#18 Re: Help Me ! » permutation and combination » 2015-04-20 20:59:06

Find the number of 7 letter words that can be formed using the letters of the word SUCCESS so that the two C are together but no two S are together?

#19 Re: Help Me ! » conics » 2015-04-17 03:16:36

thanks bob. smile

and yes I will surely be disturbing you with other problems on conic section as well.:)

#20 Re: Help Me ! » conics » 2015-04-13 15:26:52

the question I easily made:-
#3 normals to a parabola y^2 =4ax meet at (h,k).Then show that h>4a.

The question I have tried:-
#Find the locus of point such that 2 of the 3 normals drawn from them to the parabola coincide.
This is what i tried;

Now what to do after this.

This is what I don't know where to start.
#Find the locus of the vertices of the family of parabolas

#21 Re: Help Me ! » conics » 2015-04-11 01:08:02

thanks bob as you really tried hard.But agnishom is right.I certainly know the basics but get stuck when the problems demand applications of many properties.One of the examples of such problem was the first one that I asked in this thread.

#22 Re: Help Me ! » conics » 2015-04-10 17:21:19

I  meant conic sections.
my query was that how can I analyze the problems based on conic sections efficiently?

#23 Re: Help Me ! » conics » 2015-04-10 03:33:10

oh thanks. smile

Well, I would be happy if you will help me by suggesting some ways on how to have a good command in conics. Pls help.

#24 Re: Help Me ! » conics » 2015-04-05 23:09:38


be squares such that for each n≥ 1, the length of a side of
equals the length of a diagonal of
.If the length of the side of
is 10 cm, then for which of the following values of n is the area of
less than 1 sq. cm.

#25 Re: Help Me ! » conics » 2015-03-31 15:33:35

thank you for the detailed solution. smile

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