To find the missing exponent in the equation \( e^? / e^{65} = e^{38} \), we can use the property of exponents that states \( \frac{e^a}{e^b} = e^{a-b} \).
Thus, we can rewrite the equation:
\[ \frac{e^?}{e^{65}} = e^{? - 65} \]
Setting this equal to \( e^{38} \):
\[ e^{? - 65} = e^{38} \]
Since the bases are the same, we can equate the exponents:
\[ ? - 65 = 38 \]
Now, solving for \( ? \):
\[ ? = 38 + 65 \] \[ ? = 103 \]
So, the missing exponent is \( 103 \).