Fix homework 3

Signed-off-by: Marcello Seri <[email protected]>

Author: mseri

4-cotangentbdl.tex

@@ -467,7 +467,7 @@ \section{Line integrals}
   \end{align} 
 \end{example}
 
-\begin{exercise}\label{exe:FTC}
+\begin{exercise}[\textit{[homework 3]}]\label{exe:FTC}
   Let $M$ be a smooth manifold, $\gamma: I = [a,b]\subset \R \to M$ a smooth curve and $\omega\in\fX^*(M)$ a $1$-form.
   Show the following properties.
   \begin{enumerate}

5-tensors.tex

@@ -454,7 +454,7 @@ \section{Tensor bundles}
   An interesting, not really surprising though (right?), property is the following: $F_* df = d(F_* f)$.
 \end{example}
 
-\begin{exercise}
+\begin{exercise}[\textit{[homework 3]}]
   Let $F:M\to N$ and $G:N\to P$ two diffeomorphisms of smooth manifolds.
   \begin{enumerate}
     \item Show that the chain rule $(F\circ G)_* = F_* \circ G_*$ holds.