Angular momentum proof not understanding?

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SUMMARY

The forum discussion centers on the application of the product rule for derivatives in the context of angular momentum. The user seeks clarification on why specific highlighted components are equal, referencing the derivative formula d(a*b) = da*b + a*db. This indicates a foundational understanding of calculus is necessary to grasp the equality in question. The discussion emphasizes the importance of the product rule in physics, particularly in deriving angular momentum equations.

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  • Understanding of calculus, specifically the product rule for derivatives.
  • Familiarity with angular momentum concepts in physics.
  • Basic knowledge of vector mathematics.
  • Experience with differential equations.
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NotASmurf
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Hey all, I'm not understanding why the bits highlighted in red are equal? Any help appreciated, thanks.
 

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It's just the product rule for derivatives, d(a*b) = da*b + a*db.
 
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Thanks you
 

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