From: Raymond Toy <toy.raymond@gm...>  20140228 22:59:45

>>>>> "Jinsong" == Jinsong Zhao <jszhao@...> writes: Jinsong> 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)); Jinsong> I thought Maxima could automatically do that... There's ratsimp(eq),algebraic; but that gives something different (but equivalent). I think that in general if you want a specific form, you have to do it yourself. I don't see how maxima can read your mind and produce exactly what you want in general. Ray 