秋天，多么美好的时光，可是也很容易长膘儿啊!不过只要你拥有下列帮手，又肯出点力气的话，呆在家里有健美身材了，赶快进入我们为你准备的......

We study classical and quantum dynamics of the symmetric harmonic oscillator and the symmetric bouncer defined in 2-D. F......