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## #1 Re: Help Me ! » Pappus nested circles » 2017-08-16 20:51:49

Hi

Can anyone help prove that R in the attached figure is = 1/2 X (ABXBC)

Thanks
Nakul

## #2 Re: Help Me ! » Limits Difficult » 2017-08-07 18:09:41

Got it thanks
Taylor Series --> Maclaurin Expansion

## #3 Re: Exercises » A Medley of Melodramatic Problems » 2017-08-04 01:52:28

Thanks , this is so interesting. I will explore.
Thanks
Nakul

## #4 Re: Exercises » A Medley of Melodramatic Problems » 2017-08-03 21:47:03

Hmm ok.
In which case would it be applicable?

## #5 Re: Exercises » A Medley of Melodramatic Problems » 2017-08-03 21:29:39

Hi,
For problem no 6, I am taking a different method.
The general term for this is = n/ (n+1)^2.

Now to find the sum of the first 6 terms = integration this general term from 0 to 6.

What am i doing wrong?

Integration of
n/ (n+1)^2 = ln (n+1) + 1 / (n+1) + C

## #6 Re: Help Me ! » Limits Difficult » 2017-08-02 20:28:49

yes the lower one

## #7 Help Me ! » Limits Difficult » 2017-08-02 17:41:25

NakulG
Replies: 5

Can anyone help solve this limit.

Thanks

Lim x-->0,  [1 -  (x^2)/2) - Cos ( x / (1 - x^2 ) ) ] / x^4

:-)

## #10 Re: Exercises » Find all angles θ » 2017-07-25 19:53:03

sinθ + cos θ = x and sinθcosθ=y
substituting we get
x^3 - 6.4x^2+x+8.4=0
Solve for x, so x = -1, 1.4 & 6

Hope this helps...

## #11 Re: Exercises » Find all angles θ » 2017-07-25 19:03:25

Sin2θ = -1, 0.96, 26

## #12 Re: Exercises » Compute the solution: » 2017-07-25 01:35:07

Thanks it worked :-)

## #13 Re: Exercises » Compute the solution: » 2017-07-25 01:15:18

ganesh wrote:

Hi;

622. Evaluate:

.

Hi, Can someone show me the working for the above question?

Thanks
Nakul

## #14 Re: This is Cool » Formulas for the solution of Diophantine equations. » 2017-05-20 01:53:43

Hi can you suggest a good charting software, i am trying to plot conic section, intersection of cylindrical cones and a plane. If you can suggest a good charting software that would be great. I tried Asymptote and geogebra... not working out for me.
thanks

## #15 Re: Euler Avenue » Factorials, Hyperfactorials and Superfactorials » 2016-12-13 04:33:27

Where are these used? In Physics?

## #16 Re: Exercises » Compute the solution: » 2016-07-11 05:07:12

yes - silly mistake in my calculation :-)

## #17 Re: Exercises » Compute the solution: » 2016-07-11 01:14:09

X= (4a-1)b/5 and Y=(4b-a)/5b

## #18 Re: Help Me ! » Is this solved corretly and if so what does -1 mean in this context » 2016-05-06 19:35:58

Thanks Bob, I will look into it.

## #19 Re: Help Me ! » Is this solved corretly and if so what does -1 mean in this context » 2016-05-06 17:08:43

Hi BobbyM, so any thoughts how come the answer to this is said to be 3. Some videos on the web show the working but it is actually not solved, it is more like back calculation.
Also in this what is meant by -1, any thoughts.

NakulG
Replies: 7

## #21 Re: This is Cool » The end of man? » 2016-03-01 07:05:23

Not related,  but conspiracy theorists would see a link
:-)
http://qz.com/627467/china-just-announced-one-of-the-largest-single-layoffs-in-history/

## #22 Re: Help Me ! » how to solve this? » 2016-01-15 22:53:09

This is a good resource for rotation of axis in conic section ... http://math.sci.ccny.cuny.edu/document/show/2685

## #23 Re: Help Me ! » how to solve this? » 2016-01-15 04:37:10

The significance of the xy term is that it tells about the rotation of the figure (ellipse), in this case as the xy is not equal to zero it is (the ellipse) is not parallel to either axis,  x or and y.

## #24 Re: Help Me ! » how to solve this? » 2016-01-15 02:20:59

Thanks, I will go thru these.
In the question that I had mentioned, what is the significance of the xy term in the equation? Can you suggest.

## #25 Re: Help Me ! » how to solve this? » 2016-01-15 00:24:42

Ok, can you point me to some online / resource where I can read and practice more on the conic section.