[" The volum: of a cube is intedent the length of an edge is "10" the "],[" its surface area increasing when the length of an "-100" is increasing on "R" ."],[" Show that the function "f(x)=x^(3)-3x^(2)+6x-100" is increasing on R."],[" Show that the function "f(x)=x^(3)-3x^(2)+6x-100" ing the points "P(2,2,1)],[" concentent coordinate of a point on the line joining the points "P(2,2,1)],[" coordinate of a point on the line joining the points."]