Structure and Interpretation of Classical Mechanics

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where is a structure that can be represented by a symmetric square matrix, so we can compute its inverse.

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[guess]

Eq. (1.110):

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where .

The Lagrange equation:

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This part is wrong.

This can be proven wrong by just checking the dimensions of the matrix products.

The source of the errors is the second step. It puts the column matrix into each equation. Instead, each row of should match only one of the two equations.

[guess]

— Me@2022-07-07 05:20:38 PM

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