how to connect tow bezier curves ?

Good evening ,

I'm new with matlab. In fact , i have a set of points that i want to approximate in least squares sense ;so i entered these points as a parameter to a function that approximates the controle points of the bezier curve . But what i want is to divide the set into two parts so that i could obtain to bezier curves connected in one controle point (same direction of tangent) and the global curve is continu(there is no no discontinuity by the connection point) . Can someboby Help me please ? ! Thank you