mata
C(2,3)
2 + 3i

a=2+3i
b=1-2*i


a+b
-5 + 3i

a-b
9 + 3i

a*b
-14 - 21i

a/b
-.285714286 - .428571429i

-a
-2 - 3i

1/a
.153846154 - .230769231i

conj(a)
2 - 3i

abs(a)
3.605551275

arg(a)
.9827937232

exp(a)
-7.31511009 + 1.04274366i

log(a)
1.28247468 + .982793723i

end