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 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

thanks man

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

doe not exists as f(9)=14 and not 19

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

x2+1/x2=7.......................x>0

find modulus of x3+1/x3

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

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sin(1)sin(3)sin(5)sin(7)........sin(89)=2^(n)

Find n........The angles are in degrees.......

 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]

Not in AIEEE,JEE,MH CET so y study.....

anyways......check

http://en.wikipedia.org/wiki/Newton%27s_method

 This Post 24 points    (4    in 6 votes )   [?]

Once an enginer ,mathematician ,physicist met at a farmers place who told them that he had a fixed amount of fence (say x).He wanted them to arrange in such a manner that he would get the maximum field in his share.

The mathematician said,make a circle.

The physicist said,make a line.As line extends fron infinity to minus infinity half of the earth is your area.

The engineer said something and he won........

What did he say......

He made a small circle.He stepped inside it and said,"I AM OUTSIDE THE FIELD".

Please do rate me for my efforts.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Experts help

There is a great confusion in the question;

http://www.goiit.com/posts/list/mechanics-brain-storming-question-on-projectiles-an-object-is-971461.htm

I would request you to please resolve the matter....

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

It is impossible that the answer is 45 degrees unless suitable values are given

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Are You all mad......I solved it taking lot of pains and you tell me its wrong ........

answer can be 45 degrees if we put appropriate values.........

OK......

For vinit pramod marathe,Amit K,Ritesh Thakur,paridhi aggarwal,mohit awasthi....... put any values ( say h=10m ; u =20m/s ; g=10m/s2) in my answer and solve by your method taking # as 45 degrees and then......... tell me who is right........

 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]

-h = u(sin #)t - (1/2)gt2  ............... (1)

x = u(cos #)t .............(2)

Substitute (2) in (1); and get quadratic in x which is

gx2 - h =2u2x(tan #) - gx2(tan #)2 ........(3)

DO NOT solve for x;

Directly differentiate ie And put [(d/d#)x] =0 (for maxima);

you will get x = u2 / [g (tan #)]...........(4)

substitute it in (4) in (3) to get;

"(sin #)2  = u2 / [2 (u2 + gh)]"

This is anyday not equal to 45 degrees

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

my friend that is true only if we throw a projectile from the ground ie Rmax  at 45 degrees

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Answer is not 45 degrees......wait ill tell you the method.....

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ecin.....
 This Post 0 points    (0    in 0 votes )   [?]
Cool.....You joined the 2% league........
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 This Post 5 points    (1    in 1 votes )   [?]

I think some might have solved this but for those who haven't, here it goes;

The Zebra Puzzle:

It is often called "Einstein's Puzzle" or "Einstein's Riddle" because it is said to have been invented by Albert Einstein as a boy. Some claim that Einstein said "only 2 percent of the world's population can solve it."It is also sometimes attributed to  Lewis Carroll .However, there is no known evidence for Einstein's or Carroll's authorship; and the original puzzle cited below mentions brands of cigarette, such as Kools, that did not exist during Carroll's lifetime or Einstein's boyhood.

The Puzzle is,

1. There are five houses.
2. The Englishman lives in the red house.
3. The Spaniard owns the dog.
4. Coffee is drunk in the green house.
5. The Ukrainian drinks tea.
6. The green house is immediately to the right of the ivory house.
7. The Old Gold smoker owns snails.
8. Kools are smoked in the yellow house.
9. Milk is drunk in the middle house.
10. The Norwegian lives in the first house.
11. The man who smokes Chesterfields lives in the house next to the man with the fox.
12. Kools are smoked in the house next to the house where the horse is kept.
13. The Lucky Strike smoker drinks orange juice.
14. The Japanese smokes Parliaments.
15. The Norwegian lives next to the blue house.

Now, who drinks water? Who owns the zebra?

In the interest of clarity, it must be added that each of the five houses is painted a different color, and their inhabitants are of different national extractions, own different pets, drink different beverages and smoke different brands of American cigarettes. In statement 6, right refers to the reader's right.

Please try and solve it.It is really cool.The good news is that I could solve it.Lets see how many GOIITians can.

Solution : http://en.wikipedia.org/wiki/Zebra_Puzzle

Source Google search : Einstein's riddle

There is also another type of puzzle in which fish is to be found,but that is relatively easier than this.

BEST OF LUCK

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Good work Bipin Sir......

Thanks a lot......

But still looking for a full solution.....

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