An answer

An answer

所有跟贴·加跟贴·新语丝读书论坛

送交者: year2226 于 2010-03-11, 16:57:54:

回答: 改成过河的题大家试试看？(有答案没过程) 由 year2226 于 2010-03-11, 13:48:08:

r=\frac{w}{\cos\theta}(\frac{\cos\theta}{1+\sin\theta})^{\frac{v/u}}

Slightly different from the standard answer.

{\frac{v/u}}-->{\frac{v}{u}} (无内容) - year2226 (0 bytes) 2010-03-11, 17:25:14 (421138)