6/6 - 2/3
3/6 - 1/3
20/4 - 4/5
4/5 - 6/8
4/4 - 6/8
If a and b are integers and a < b, b > 1 then compare a-1/b-1 , a+1/b+1.
f(x)=\sqrt(x^(6)-2x)
x+1/2 = 3/x
2/3 - 5/5
determinant of 3by3 matrix
