From: Jinsong Zhao <jszhao@ye...>  20140228 22:38:42

On 2014/2/28 14:24, Thomas D. Dean wrote: > On 02/28/14 13:49, Jinsong Zhao wrote: > > Look at the numerator and denominator: > eq:(sqrt(x+1)  sqrt(x))/(sqrt(x+1)+sqrt(x)); > num(eq); > denom(eq); > > They are of the form (a+b)/(ab) > (a+b)*(ab) expands to a^2  b^2 > multiplying the numerator and denominator by the denominator shows promise: > > num(eq)*denom(eq); > ratsimp(num(eq)*denom(eq)); > ratsimp(num(eq)*denom(eq))/(denom(eq)*denom(eq)); I thought Maxima could automatically do that... > > > The maxima documentaton online at > > http://maxima.sourceforge.net/documentation.html > > provides some help. > > Tom Dean > Thank you very much! Regards, Jinsong 