Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫  π  -¹ ² ³ °

You are not logged in.

## #1 Help Me ! » hi dudes.. help me with this... » 2010-08-02 19:33:22

sk
Replies: 2

If in a triangle ABC a : b : c = 8 : 10 : 12 and the least angle is theeta, then  the greatest angle in terms of theeta is?

## #2 Help Me ! » Asymptotes help » 2009-03-31 18:23:11

sk
Replies: 1

What is an asymptote? Does the linear, quadratic, and cubic functions have asymptote? Need urgently.... pls help..

## #3 Help Me ! » Equations and inequalities Help - Power equations. » 2009-01-02 21:22:03

sk
Replies: 0

What is meant by power equations? What is the standard form of it? What are the methods to solve these equations?

## #4 Help Me ! » Need help in this.... What exactly comes under this heading? » 2008-12-21 18:08:21

sk
Replies: 1

Associate a given equation with a function whose zeros are the solutions of the equation.

## #5 Re: Help Me ! » Tangent Line Problems Help » 2008-09-30 17:45:44

Given function is f(x) = 2/(x+1).
We need to find the equation of the tangent at (0, 2)

Step 1: Find the derivative of the function f(x) = 2/(x + 1)
f1(x) = -2/(x+1)^2 = -2/(x^2+2x+1)
Step 2: Now, substitute the x value from the given point in the derivative of f(x) and find the slope of the required line.
==> -2/(0 + 0 + 1)
f1(x) = -2.
==> Slope = -2.
Step 3: Now, we have the slope as -2 and the point as (0, 2).
then the equation is given by y - y1 = m(x-x1)
y -2 = -2(x-0)
y - 2 = -2x
==> 2x + y - 2 = 0 is the required equation of the tangent.

## #6 Help Me ! » Statistics!!!!!!!!! » 2008-07-01 22:45:45

sk
Replies: 1

What is a Non Parametric Test in Statistics?

## #7 Help Me ! » Vectors!!!!!!!!!!!!!!!! Need Help » 2008-07-01 22:43:15

sk
Replies: 1

Help me in solving this problem using the graphical and the analytical method: Vector A is 60 Newton 20 degrees south of west, Vector B is 80 Newton North, and Vector C 70 Newtons 80 degrees North of east. Find the the direction and the magnitude of the resultant vector

## #8 Help Me ! » Help me... » 2007-11-02 00:19:52

sk
Replies: 1

I wanna know much about the golden ratio. Can any one hlep me please??

## #9 Help Me ! » Help me with this problem » 2007-07-09 21:12:42

sk
Replies: 4

How many words of 4 consonants and 3 vowels can be made from 12 consonants and 4 vowels, if all the letters are different?

## #10 Help Me ! » Hi! Help me with this... » 2007-07-09 19:33:52

sk
Replies: 2

Can any one explain me about the fixed point theory briefly?

I need it for my preparation.

## #11 Help Me ! » Help me with this » 2007-07-09 18:02:53

sk
Replies: 1

A ship develops a leak 12 km from the shore. Despite the leak, the ship is able to move towards the shore at a speed of 8 km/hr. However, the ship can stay afloat only for 20 minutes. If a rescue vessel were to leave from the shore towards the ship, and it takes 4 minutes to evacuate the crew and passengers of the ship, what should be the minimum speed of the rescue vessel in order to be able to successfully rescue the people aboard the ship?

## #12 Help Me ! » Help me with this.... » 2007-07-08 22:30:29

sk
Replies: 1

Yana and Gupta leave points x and y towards y and x respectively simultaneously and travel in the same route. After meeting each other on the way, Yana takes 4 hours to reach her destination, while Gupta takes 9 hours to reach his destination. If the speed of Yana is 48 km/hr, what is the speed of Gupta?

## #13 Re: Help Me ! » Algebra. » 2007-06-12 23:25:31

Yes... Thanks for the nice explanation John

## #14 Re: Introductions » A new buddy here for U » 2007-06-07 22:07:21

Yes..... Me too from hyderabad.. You can get good friends and good answers for your math questions tooooo....

You can clear your doubts in maths here in this site.. Feel free to ask your math queries....

## #15 Re: Help Me ! » differce equations questions » 2007-06-03 18:24:51

You are most welcome  natasha..... :-)

## #16 Re: Help Me ! » differce equations questions » 2007-05-30 21:01:34

Sorry dear 35 + 1/2 + 1/4 + very small numbers will come..

So the answer will be B. maximum of 36 cm.

## #17 Re: Help Me ! » differce equations questions » 2007-05-30 21:00:24

Initially, the shrub was 20 cm high.. the very first month.. its growing 8cm and the second month 4 cm and the third month 2 cm..

And this pattern is continuing. so the fourth month the height will increase 1 cm and the in the fifth month the height will increase 1/2cm and in the sixth month it will increase by 1/4 cm.. and so on..

so..  20 + 8+4+2+1+(1/2) + (1/4) + so on...

35 +  very small number.

## #18 Re: Help Me ! » differce equations questions » 2007-05-30 20:55:49

Natashabaker,
A shrub, 20 cm high, was planted in a pot.
After it was planted, its height increased by 8 cm in the first month by 4 cm in the second month
and by 2cm in the third month assuming this pattern of growth continues,
the shrub will grow to its maximum height of:
A. 35cm
B. 36cm
C. 37cm
D. 38cm
E. 40cm

The answer for this question is the option C ---- 36 cm..

## #19 Re: Help Me ! » differce equations questions » 2007-05-30 20:50:07

You are most welcome baker:)

## #20 Re: Help Me ! » Help me with thi... » 2007-05-29 23:19:47

mathsyperson! Excellent! That was really a great answer and fine explanation..

## #21 Re: Help Me ! » differce equations questions » 2007-05-29 22:23:09

So, The number of visitors in the year 2002 is 44,800..

Have you got it?

## #22 Re: Help Me ! » differce equations questions » 2007-05-29 22:21:06

From the question. Vn= the number of visitors in the nth year.. ..

Given that, in the year 2000, there were 25000 visitors..

V2000 = 25000...  so.. V(2000+1) = 1.2(V2000) + 4000.

V(2001) = 1.2(25000) + 4000.

V(2001) = 34, 000

That is the number of visitors in the year 2001 is 34,000

therefore for the year 20o2

V(2001+1) = 1.2 V(2001) + 4000

V(2002) = 1.2 ( 34,000) + 4000

V(2002) = 44,800

## #23 Re: Help Me ! » differce equations questions » 2007-05-29 19:51:14

Sorry the fourth option.. 44,800

## #24 Re: Help Me ! » differce equations questions » 2007-05-29 19:41:32

I hope you got the answer now.. Do you want me to put down the steps?

## #25 Re: Help Me ! » differce equations questions » 2007-05-29 19:33:10

Natashabaker , The answer for the first question given by you is the third option.. 44, 800...