Solución 1
\[f(x) = \cos(2)\]
\[f'(x) = \boxed{0}\]
Solución 2
\[f(x) = e^x\]
\[f'(x) = \boxed{e^x}\]
Solución 3
\[f(x) = 4\sin(x)\]
\[f'(x) = \boxed{4\cos(x)}\]
Solución 4
\[f(x) = 3 \cdot 4^x\]
\[f'(x) = \boxed{3 \cdot 4^x \ln(4)}\]
Back to Exercises