## Saturday, June 25, 2011

The original graph of fun(x,y) > 0.

( Mathematical software used: gnuplot )

## Thursday, June 23, 2011

### Ghost Friends (鬼友)

( Mathematical software used: gnuplot )

## Tuesday, June 21, 2011

### Sacrificial Girl's Revenge (獻祭少女的復仇)

( Mathematical software used: UDAV )

## Monday, June 20, 2011

### Dwarf Captain (矮人隊長)

( Mathematical software used: gnuplot )

## Sunday, June 19, 2011

### Little Mouse (小老鼠)

1. The mouse in the original graph of the inequality fun(x,y) > 0 has no mouth.

2. Add a circle ( mouth(x,y) = 0 ) as the border line of the mouth.
Graph fun(x,y) * mouth(x,y) > 0.

3. Add the boundary curves of the inequality regions which will be colored black or white.

4. The red and green meshed regions will be colored black and white, respectively.

5. Color the inequality regions black or white.

6. The finished result.

( Softwares used: gnuplot, Graph )

( Mathematical software used: gnuplot )

## Saturday, June 18, 2011

The original graph of fun(x,y) = 0.

( Mathematical software used: gnuplot )

## Monday, June 13, 2011

### Spaceman (太空人)

The original graph of fun(x,y) > 0.

( Mathematical software used: UDAV )