[AMR] Notes in various sections

electives/amr/parts/03_multi-sensor-estimation/00_linearization.tex

@@ -3,6 +3,7 @@
 $\vec{f}(\vec{x}) \approx \vec{f}(\vec{\overline{x}}) + \mat{J}_{\vec{f}} \big|_{x = \overline{x}}(\vec{x} - \vec{\overline{x}})$, $f'$, no vec in 1D; $\vec{\overline{x}}$ lin. p.
 
 \shortdefinition[Jac.] $\mat{J}_{\vec{f}}$ rows for eq of $\vec{f}$; cols for vars of each eq.
+It may also be a single value (if just one var in the state)
 
 \shortdefinition[Gradient] $\nabla \vec{f}$ is vec, each comp. for par diff of var