Google this.

[rug]

5 + (- sqrt(1- x^2- (y- abs(x))^2))cos(30((1-x^2-(y-abs(x))^2))), x is from -1 to 1, y is from -1 to 1.5, z is from 1 to 5

[PoliticAverse]

1. Should save that for February 14th... n/t

[NYC_SKP]

2. I'll see your equation and raise you THIS!

4 + (- sqrt(1- x^2- (y- abs(x))^2))cos(30((1-x^2-(y-abs(x))^2))), x is from -1 to 1, y is from -1 to 1.5, z is from 1 to 5

[rug]

3. I give. I've exhausted my trigonometry.

[NYC_SKP]

5. You has to Google It! Hell, nobody can SOLVE these! Here, a link to the results...

...inspired by yours with one tweak.

Thing inspired by RUG!

You have to click on you, above.

[pinboy3niner]

6. Rut-roh, that's a bad sine

You may have to put it in a sling or wear an algebra to avoid an emergency trigeostomy. At least, that's what I figure.

[rug]

8. It is probable that the degree to which you formulated this is exponential.

[Scuba]

9. You're in excellent form tonight.

[rug]

4. On second thought, . . . .

you're on!

exp(-((x-4)^2+(y-4)^2)^2/1000) + exp(-((x+4)^2+(y+4)^2)^2/1000) + 0.1exp(-((x+4)^2+(y+4)^2)^2)+0.1exp(-((x -4)^2+(y- 4)^2)^2)

[NYC_SKP]

7. Oh great!

Now I'm craving something, can quite put my finger on it!

The symmetry, impressive!

[orleans]

10. lol! n/t