Bilibili0:28Bilibili · Charles队长Original video
Calculus · 中文
Substitution in integrals
A Chinese visual explanation of substitution in integrals. Catalog metadata imported from the original Math Video site and checked against the source platform; not a transcript.
Reviewed learning material · Video analysis · English
The video illustrates the substitution method for double integrals using polar coordinates. It contrasts Cartesian and parameter planes, mapping a circular region to a rectangular one. The segment derives the transformation equations, calculates the Jacobian determinant as 'r', and presents the final change-of-variable formula.
Before you watch
- Definition of Double Integrals
- Calculating Determinants
- Trigonometric Identities

