9.3 show that a branch (sec. 33) log z = In 8 + 10 (100)

of the logarithmic function can be written

log2 = 1/2 In (@a2²77²) +itan (x)

2

in rectangular co-ordinates. Then using the theorem in..

See 23, Show that the given branch is analytic in its

domain of definition and that $2 log2 = — there