# FFT for real signals

I am new to signal processing and especially to FFT. I need to know:

• if it's possible to calculate FFT for example for vector $$V=\begin{bmatrix}1&2&3&4&5&6&7&8\end{bmatrix}$$ without calculate imaginary part
• and will it be reversible ?
• Why do you want this? What are you trying to do? – endolith Dec 20 '16 at 22:37