徐小培 发表于 2010-2-4 20:07 ! a8 y ^) P) W+ x4 Z Solve[8*x^(3/2/n) - 8*x^(-3/2/n) == 63, x] 4 k9 d" y! S z6 q. x0 Y: LSolve[2*(x/a)^(1/2) + 3*(a/x)^(1/2) == b/a + 6*a/b, x]