z = 50 / (3+4i). What is z in a+bi form?
Multiply by complex conjugate
z = 50 / (3+4i) * (3-4i) / (3-4i)
Rationalise
z = 50 ( 3 - 4i) / 25 = 6 - 8i.
IM
Answered by Ignacio M. • Further Mathematics tutor
8240 Views
See similar Further Mathematics A Level tutorsRelated Further Mathematics A Level answers
All answers ▸The point D has polar coordinates ( 6, 3π/4). Find the Cartesian coordinates of D.
How to determine the modulus of a complex number?
Prove that (AB)^-1 = B^-1 A^-1
Given that p≥ -1 , prove by induction that, for all integers n≥1 , (1+p)^k ≥ 1+k*p.