Problem 2: Given a complex number
z=x+iy
in rectangular form, we define
e^(z)
to be
e^(z)=e^(x)e^(iy)
, and recall that
e^(iy)
was previously defined through Euler's formula. (a) Write the function
f(z)=e^(z)
as
f(z)=u(x,y)+iv(x,y)
. (b) Use your answer to part (a) to show that
\lim_(z->2+i\pi )e^(z)=e^(2+i\pi )
.