Some more fun ones: https://www.google.com/search?q=z%3Dsqrt(x%5E2%2By%5E2)*sin(sqrt(x%5E2%2By%5E2))&ie=utf-8&oe=utf-8 https://www.google.com/search?q=z%3Dsqrt

Some more fun ones: https://www.google.com/search?q=z%3Dsqrt(x%5E2%2By%5E2)*sin(sqrt(x%5E2%2By%5E2))&ie=utf-8&oe=utf-8 https://www.google.com/search?q=z%3Dsqrt(x%5E2%2By%5E2)*sin(... https://www.google.com/search?q=5%20%2B%20(-sqrt(1-x%5E2-(y-abs(x))%5E2))*cos(30*((1-x%5E2-(y-abs(x))%5E2)))%2C%20x%20is%20from%20-1%20to%201%2C%20y%20is%20from%20-1%20to%201.5%2C%20z%20is%20from%201%20to%206 https://www.google.com/search?q=5%20%2B%20(-sqrt(1-x%5E2-(y-... https://www.google.com/search?q=100-3%2F%28sqrt%28x%5E2%2By%5E2%29%29%2Bsin%28sqrt%28x%5E2%2By%5E2%29%29%2Bsqrt%28200-%28x%5E2%2By%5E2%29%2B10*sin%28x%29%2B10sin%28y%29%29%2F1000%2C+x+is+from+-15+to+15%2C+y+is+from+-15+to+15%2C+z+is+from+90+to+101 https://www.google.com/search?q=100-3%2F%28sqrt%28x%5E2%2By%...