- #1
Mark C
- 7
- 0
Hi,
How would I do the following:
Find all w in C, such that cos(z + w) = cos z, for all z in C.
Of course I would need to use the identity cos z = (e^iz +e^-iz)/2, but I have trouble finding w for all z.
Thank you
How would I do the following:
Find all w in C, such that cos(z + w) = cos z, for all z in C.
Of course I would need to use the identity cos z = (e^iz +e^-iz)/2, but I have trouble finding w for all z.
Thank you