[Analysis] Small fixes

semester3/analysis-ii/cheat-sheet-jh/parts/vectors/differentiation/02_differential.tex

@@ -42,6 +42,7 @@ we can compute the partial derivative using the chain rule as follows:
 $\frac{\partial g}{\partial \phi} = \frac{\partial g}{\partial x} \cdot \frac{\partial x}{\partial \phi}
 + \frac{\partial g}{\partial y} \cdot \frac{\partial y}{\partial \phi} + \frac{\partial g}{\partial z} \cdot \frac{\partial z}{\partial \phi}$
 where all $\frac{\partial g}{\partial x}$, etc are known from the gradient and the other elements can be computed quickly from the known equations.
+The chain rule for higher or lower dimensional functions is as one would expect from the above formula.
 
 Finally, evaluate $\frac{\partial g}{\partial \phi}$ at the required points and compute the result.