関連ワード:  explain continuity of a function    define continuity of a function    define continuity of a function with example    what is continuity of a function in mathematics    define continuity of a function class 11    define continuity of a function on an interval    define continuity of a function at point    what is continuity of a function on an interval    what is continuity of a function in calculus    define continuity of a function at the point x p