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172,507 results

rootmath
Introduction to Vectors

http://www.rootmath.org | Linear Algebra This will be a basic introduction to vectors. Vectors communicate 2 pieces of information, ...

6:59
Introduction to Vectors

639,306 views

14 years ago

Khan Academy India - English
Types of vectors in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we realise that if the vectors are not free, then even if they have the same magnitude and direction, they may not be ...

9:14
Types of vectors in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

1,067 views

1 year ago

Khan Academy India - English
Components of a vector in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we talk about the components of a vector in 3D. For reference, we use unit vectors along x, y, and z axes and ...

8:49
Components of a vector in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

888 views

1 year ago

Khan Academy India - English
Projection of a vector | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we discuss the concept of projection. We try to find the projection of a given vector on another. We then apply what ...

8:38
Projection of a vector | Vector Algebra | Grade 12 | Math | Khan Academy

5,413 views

1 year ago

Khan Academy India - English
Cross product of unit vectors | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we familiarise ourselves with the formula for cross product of vectors. We look at a few scenarios and special cases.

6:06
Cross product of unit vectors | Vector Algebra | Grade 12 | Math | Khan Academy

2,212 views

1 year ago

Khan Academy India - English
Dot product of vectors in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we familiarise ourselves with the formula for dot product of vectors. We look at a few scenarios and special cases.

9:48
Dot product of vectors in 3D | Vector Algebra | Grade 12 | Math | Khan Academy

2,586 views

1 year ago

Khan Academy India - English
Equation of a line in space | 3D Geometry | Grade 12 | Math | Khan Academy

In this video, we learn how to find the equation of a line in 3D. We first look at the vector form - where it comes from and how to find ...

10:02
Equation of a line in space | 3D Geometry | Grade 12 | Math | Khan Academy

4,158 views

11 months ago

Khan Academy India - English
Finding area using cross product | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we derive the formula for the area of a parallelogram using the cross product. We then solve problems where we use ...

7:00
Finding area using cross product | Vector Algebra | Grade 12 | Math | Khan Academy

855 views

1 year ago

Khan Academy India - English
Adjoint of a matrix | Determinants | Grade 12 | Math | Khan Academy

In this video, we learn how to find the adjoint of a given matrix. We first find minors corresponding to each element. From the set of ...

4:07
Adjoint of a matrix | Determinants | Grade 12 | Math | Khan Academy

9,367 views

11 months ago

Khan Academy India - English
Minors and cofactors | Determinants | Grade 12 | Math | Khan Academy

In this video, we learn how to find minors and cofactors corresponding to the elements of a determinant. We start off with minors ...

7:30
Minors and cofactors | Determinants | Grade 12 | Math | Khan Academy

8,139 views

11 months ago

Khan Academy India - English
Domain and range of inverse functions| Inverse Trigonometric Functions| Grade 12| Math| Khan Academy

In this video, we share some observations on the domain and range of inverse trigonometric functions. We realise that the sets for ...

12:47
Domain and range of inverse functions| Inverse Trigonometric Functions| Grade 12| Math| Khan Academy

1,705 views

11 months ago

Khan Academy India - English
Angle between two lines | 3D Geometry | Grade 12 | Math | Khan Academy

In this video, we learn how to find the angle between two lines in 3D. We first understand how to do this when the vector forms are ...

7:42
Angle between two lines | 3D Geometry | Grade 12 | Math | Khan Academy

4,507 views

11 months ago

Khan Academy India - English
Cauchy-Schwartz and Triangle inequality of vectors | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we discuss inequalities of multiplication and addition of vectors. Cauchy-Schwartz inequality says that the magnitude ...

10:30
Cauchy-Schwartz and Triangle inequality of vectors | Vector Algebra | Grade 12 | Math | Khan Academy

3,874 views

1 year ago

Khan Academy India - English
Principal value of inverse functions| Inverse Trigonometric Functions| Grade 12| Math | Khan Academy

In this video, we find the principal values of a few inverse trigonometric functions. The approach that we follow here is to figure out ...

5:08
Principal value of inverse functions| Inverse Trigonometric Functions| Grade 12| Math | Khan Academy

2,707 views

11 months ago

Khan Academy India - English
Angle between vectors | Vector Algebra | Grade 12 | Math | Khan Academy

We look at ways to get information about the angle between two vectors from their dot product. We find the angle between vectors ...

7:52
Angle between vectors | Vector Algebra | Grade 12 | Math | Khan Academy

699 views

1 year ago

Khan Academy India - English
Section formula in 3D (Derivation) | Vector Algebra | Grade 12 | Math | Khan Academy

In this video, we derive the section formula for vectors for both internal and external division. We leverage the concept of ...

7:23
Section formula in 3D (Derivation) | Vector Algebra | Grade 12 | Math | Khan Academy

5,009 views

1 year ago

Khan Academy India - English
Marginal cost and marginal revenue | Application of derivatives | Grade 12 | Math | Khan Academy

In this video, we look at an application of derivatives in the world of Economics. We're given the equations for total cost and total ...

7:45
Marginal cost and marginal revenue | Application of derivatives | Grade 12 | Math | Khan Academy

1,007 views

1 year ago

Khan Academy India - English
Word problems using matrices and determinants | Determinants | Grade 12 | Math | Khan Academy

In this video, we solve word problems involving system of equations using the matrix method. We first represent 2 scenarios in the ...

8:13
Word problems using matrices and determinants | Determinants | Grade 12 | Math | Khan Academy

1,403 views

11 months ago

Khan Academy India - English
Distance between skew lines (intuition) | 3D Geometry | Grade 12 | Math | Khan Academy

In this beautiful video, we first look at the 3D animation of 2 skew lines and try to get a feel of the minimum distance between them.

8:12
Distance between skew lines (intuition) | 3D Geometry | Grade 12 | Math | Khan Academy

14,997 views

11 months ago

Khan Academy India - English
Symmetric and skew symmetric matrices | Matrices | Grade 12 | Math | Khan Academy

In this video, we talk about symmetric and skew symmetric matrices. We first look at examples of each and then understand the ...

7:48
Symmetric and skew symmetric matrices | Matrices | Grade 12 | Math | Khan Academy

6,617 views

11 months ago