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(x+iy)(3+i9)?... look like if k was allowed to vary over all possible complex no.s? Note, z = 3+9i. k = every possible complex no. (& obv. all the purely reals too).
it would just be every complex number on the complex plane,... look like if k was allowed to vary over all possible complex no.s? Note, z = 3+9i. k = every possible complex no. (& obv. all the purely reals too).
Correct. It forms every complex no. (& thus every real no.).it would just be every complex number on the complex plane,
k=rcis(theta)
kz means a rotation of theta (for 0<=theta<=2pi)
and a lengthening of r (probably not the best wording) of the ray of z
seeing as both r and theta are unbounded the new modulus and argument can be any value
A more general way to look at this is you have some numberCorrect. It forms every complex no. (& thus every real no.).