Solución
v
(
t
)
=
e
t
i
−
e
t
j
,
a
(
t
)
=
e
t
i
+
e
t
j
,
∥
v
(
t
)
∥
=
e
2
t
+
e
−
2
t
\bold{v}(t) =e^t\bold{i}-e^t\bold{j}, \bold{a}(t)= e^t\bold{i}+e^t\bold{j},\\ \|\bold{v}(t)\|=\sqrt{e^{2t}+e^{-2t}}
v
(
t
)
=
e
t
i
−
e
t
j
,
a
(
t
)
=
e
t
i
+
e
t
j
,
∥
v
(
t
)
∥
=
e
2
t
+
e
−
2
t