• Book	Advanced Engineering Mathematics
  Author	Erwin Kreyszig
  Edition	8th Edition

code_begins

var ('z1, z2')
z1 = 4-6*i
z2 = 2+2.5*i
arg(z1*z2)
-0.086738338676
arg(z1)+arg(z2)
-0.086738338676

code_ends

• Solution by:

  • sampath reddy, student, VREC
  • sajith kumar, student, VNRVJIT