What is the meaning of this: {x,0,0}/|x|^3 = (20^7, 50^6) ?

  • Thread starter N_F
  • Start date
  • #1
N_F
6
0
What is the meaning of this: {x,0,0}/|x|^3 = (20^7, 50^6) ??

When I plug in this "{x,0,0}/|x|^3", here: http://www.wolframalpha.com/

...it plots some range for x=-1 to x=+1, and it plots values from 5*10^6 to 2*10^7.

What does that mean and where did those numbers come from? What is it that I wrote, what kind of function is that? What is the meaning of the result? What did Mathematica do? What is the actual calculation behind this, how can I obtain those numbers with pen and paper, what are the steps?
 

Answers and Replies

  • #2
HallsofIvy
Science Advisor
Homework Helper
41,833
961


If you don't know what you wrote, then I don't see how anyone else can make sense of it. Where did you see "{x, 0, 0}/|x|^3= (20^7, 50^6}"? Knowing the context might help us understand the notation.
 
  • #3
N_F
6
0


If you don't know what you wrote, then I don't see how anyone else can make sense of it. Where did you see "{x, 0, 0}/|x|^3= (20^7, 50^6}"? Knowing the context might help us understand the notation.
I wrote this: {x, 0, 0}/|x|^3

That expression evaluated here: http://www.wolframalpha.com/


...produces the result as I described it. The question is if you know how did Mathematica arrive to that result, and if you do, then can you please explain the steps and calculation behind it?
 
  • #4
Hurkyl
Staff Emeritus
Science Advisor
Gold Member
14,916
19


The plot has a legend....
 
  • #5
N_F
6
0


The plot has a legend....
Yes, the legend says: "(x from -1 to 1)".

The question is, do you know how did Mathematica arrive to that result (5*10^6 - 2*10^7), and if you do, then can you please explain the steps and calculation behind it?
 

Related Threads on What is the meaning of this: {x,0,0}/|x|^3 = (20^7, 50^6) ?

Replies
5
Views
1K
  • Last Post
Replies
12
Views
2K
  • Last Post
Replies
7
Views
10K
Replies
5
Views
6K
Replies
10
Views
4K
Replies
4
Views
2K
Replies
3
Views
6K
Replies
7
Views
3K
Replies
6
Views
793
Replies
4
Views
3K
Top