13 question (60) Vidyalankar : JEE - Mathematics
13. If iz3 + z2 —z 4i-O, then show that. Izl 1.
14. use de—M0ivre's theorem to solve the equation =
15. If 1, 0), are the three cube roots of unity, show that
(a + + (a cco)3 = (2a —b — c)(2b —c -a
27 abc if a + b + c
Part II (Geometrical Interpretation: To be discussed aft
16. Find the complex •maximum pos
tz-51S3.
17. Prove that the Gea ot triangle whose vertice
