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### 5. Chapter Summary

Advantages of the Matrix method include

- Systematic adjustment process
- Error propagation for adjusted values and observations

Like the Direct Minimization method, measurements between unknowns are easily included. However, instead of taking derivatives, observation equation values are added as rows to the** [C]** and **[K]** matrices. This alone can make a big difference with non-linear observation equations which can have up to six partial derivatives each.