thanks for telling me that.

thanks for telling me that.

thanks,I've known how to make it,

thanks,I've known how to make it,

Sum(a[ijk](t)*(x^j)^``(k), `i,j,k`=1..n) + ``(b^j)(t) = 0;

but if I delete the n,then it will not be converted like what you show,

so how do not show the supscribt n?

Sum(a[ijk](t)*(x^j)^``(k), `i,j,k`=1..n) + ``(b^j)(t) = 0;

but if I delete the n,then it will not be converted like what you show,

so how do not show the supscribt n?

Yes,

some pictures were captured from some old E-books,and sometimes I don't like to re-plot them,

and image processing has some additional fun, 

Yes,

some pictures were captured from some old E-books,and sometimes I don't like to re-plot them,

and image processing has some additional fun, 

question2:

Can I ocr the numbers in the left of the picture to a .txt,and keep the relative position?

7

13

this problem come from the go game,I've saved some my go game by picture,

I need to ocr them to .txt for further dispose.

the postion is something like this,I've tried some OCR softwares,but they can only ocr the isolated numbers(I should choose every number as ocr area.),and the position information was destroyed.

   A B C D E F G H J K L M N O P Q R S T
19 . . . . O . . . . O O O O X . . . . . 19
18 . . X O . O . . . O X X O X X X X . . 18
17 X X X X O . . . O O X . X X . . O . . 17
16 O O X O . O O O X X . X X O . X . . . 16
15 O X X . . . O X O . X O . . O X . X X 15
14 O O O O . O X X . . X O . O X . X X O 14
13 . . . . . O O X . X O O . O X . O X O 13
12 . . . . O X X X . . . . O X X X X O O 12
11 . . . . O O O X . . X X X X O O O X O 11
10 . . . + O X X X . X O O O X X O O . O 10
 9 . . O . O O O X . . O . X . X O . . . 9
 8 . O . . O X X . . . . . . . X O X O . 8
 7 . X O . O O X . X X X . . . X X O . . 7
 6 O X O . O X . X O O X . . X X O O . . 6
 5 O O O O X X . . X O O X X O X X O O . 5
 4 O X X X X . . . X O O O X O O O X X X 4
 3 O X . . . . X . X X O O O O O . O X X 3
 2 O O X X . . . X O X X X X X O . O X O 2
 1 O O X . . . . . . . . . X O O . . O . 1
   A B C D E F G H J K L M N O P Q R S T

question2:

Can I ocr the numbers in the left of the picture to a .txt,and keep the relative position?

7

13

this problem come from the go game,I've saved some my go game by picture,

I need to ocr them to .txt for further dispose.

the postion is something like this,I've tried some OCR softwares,but they can only ocr the isolated numbers(I should choose every number as ocr area.),and the position information was destroyed.

   A B C D E F G H J K L M N O P Q R S T
19 . . . . O . . . . O O O O X . . . . . 19
18 . . X O . O . . . O X X O X X X X . . 18
17 X X X X O . . . O O X . X X . . O . . 17
16 O O X O . O O O X X . X X O . X . . . 16
15 O X X . . . O X O . X O . . O X . X X 15
14 O O O O . O X X . . X O . O X . X X O 14
13 . . . . . O O X . X O O . O X . O X O 13
12 . . . . O X X X . . . . O X X X X O O 12
11 . . . . O O O X . . X X X X O O O X O 11
10 . . . + O X X X . X O O O X X O O . O 10
 9 . . O . O O O X . . O . X . X O . . . 9
 8 . O . . O X X . . . . . . . X O X O . 8
 7 . X O . O O X . X X X . . . X X O . . 7
 6 O X O . O X . X O O X . . X X O O . . 6
 5 O O O O X X . . X O O X X O X X O O . 5
 4 O X X X X . . . X O O O X O O O X X X 4
 3 O X . . . . X . X X O O O O O . O X X 3
 2 O O X X . . . X O X X X X X O . O X O 2
 1 O O X . . . . . . . . . X O O . . O . 1
   A B C D E F G H J K L M N O P Q R S T

thanks,I think

if the browse window can be maximized,it'll be better,

can I move the horizontal scroll bar with mouse wheel? like the vertical scroll bar

thanks,I think

if the browse window can be maximized,it'll be better,

can I move the horizontal scroll bar with mouse wheel? like the vertical scroll bar

both of them,but the number of the points are under control,or random numbers.

but they have a limited condition: they maybe on a circle,they maybe on the vertex of a regular polygon,

the graphics is a simple illustration.that is a try.

the points are in the the cube

both of them,but the number of the points are under control,or random numbers.

but they have a limited condition: they maybe on a circle,they maybe on the vertex of a regular polygon,

the graphics is a simple illustration.that is a try.

the points are in the the cube

The third graph was plotted with default plotpoints,that astonished me

z := x + I*y

ParametricPlot[Through[{Re, Im}[1/z]], {x, 1/4, 1/2}, {y, -2, 2}]

Yesterday I think it should be easier