1. The problem statement, all variables and given/known data How do we evaluate integrals of COMPLEX-valued functions (like the following)? 2 ∫ exp[-(2+3i)x] dx 0 This integral is appearing in my PDE course in the topic of Fourier transform, but I have no background of how to integrate complex-valued functions. Looking back at my calculus textbook, all functions are assumed to be REAL-valued so really all theorems about integrals are not applicable in this situation... Can I simply treat -(2+3i) as a scalar and use the exact same rules of integration from calculus? i.e. is integrating complex-valued functions exactly the same as integrating real-valued functions if we treat complex numbers as scalars? 2. Relevant equations N/A 3. The attempt at a solution N/A Thanks for your help!