Functions of several variables Limits and Continuity Partial derivatives Tangent Planes Chain rule The gradient and directional derivatives, Double Integrals in Cartesian Coordinates; Doubles Integrals in Polar Coordinates. Surface Area Triple Integrals in Cartesian Coordinates Plane Curves and Parametric Equations Calculus and Parametric Equations Arc Length and Surface Area in Parametric Equations Polar Coordinates للتواصل معي على الواتساب: 0554352759