In this 50 mins Video Lesson :

Introduction to DE,
Ordinary DE,
Partial DE,
Order,
Degree,
Formation of DE,
Variable Separable DE,
Concept of Particular and General Solution,
Solving by Substitution,
and other topics.

In this 24 mins Video Lesson :

Homogeneous DE,
Type dy/dx=(a1x+b1y+c1)/(a2x+b2y+c2),
Type dy/dx=[K1(ax+by)+c1]/[K2(ax+by)+c2],
and other topics.

In this 36 mins Video Lesson :

First Order Linear DE,
Solution of First Order Linear DE,
DE of type f'(y)dy/dx + P(x)f(y) = Q(x),
Bernoulli's Equation,
and other topics.

In this 65 mins Video Lesson :

Exact DE and Concept of Potential Function,
Test for Exactness,
Types of DEs Reducible to Exact form,
and other topics.

In this 39 mins Video Lesson :

Steps for Solving a general First Order DE,
DE of Type dU(x,y) = dV(x,y),
and other topics.

In this 37 mins Video Lesson :

Concept of Direction Cosines,
Direction Ratios,
Distance between 2 points and DRs of line Joining them,
Angle between Lines,
Equation of a Line,
Equation of a Plane,
Angle between Planes,
Prependicular distance from a point to a plane,
and other topics.

In this 50 mins Video Lesson :

Introduction to a Sphere,
Equation of Sphere,
Equation of Sphere with given end points of Diameter,
Intersection of Plane and Sphere,
Great Circle,
Intersection of 2 Spheres,
Sphere through a given Circle,
and other topics.

In this 61 mins Video Lesson :

Tangent Planes,
Touching Spheres,
Angle of Intersection of Spheres,
Orthogonal Spheres,
and other topics.

In this 52 mins Video Lesson :

Introduction to a Cone,
Quadric Cone,
Cone with Vertex at Origin,
Cone with Vertex at Origin and Passing Through Coordinate Axes,
Typical Problems on the mentioned concepts,
and other topics.

In this 34 mins Video Lesson :

Right Circular Cone,
RC cone with vertex at Origin and Z axis as the Axis,
RC cone with a given vertex and axis,
Typical Problems on the mentioned concepts,
Enveloping Cone,
and other topics.

In this 44 mins Video Lesson :

Introduction to a Cylinder,
Cylinder with a given conic as a guiding curve,
Typical Problems on Cylinders,
Right Circular Cylinder,
RC Cylinder with a given radius and axis,
Enveloping Cylinder,
and other topics.