Cube Roots of Unity

IMPORTANT

Cube Roots of Unity: Overview

In this topic, we will learn about the cube roots of units. We will explore some properties of these roots. In addition, we will discuss how to find the cube roots of unity. It also covers some applications of this concept.

Important Questions on Cube Roots of Unity

EASY
IMPORTANT

Evaluate :  -12+3i21000.

HARD
IMPORTANT

If x+1x=1λ=x4000+1x4000 and μ be the digit at the unit place of the number 22n+1, where nN then value of λ+μ is equal to

HARD
IMPORTANT

If z=123-i and the least positive integral value of n such that z101+i109106=zn is k, then the value of 25k is equal to

EASY
IMPORTANT

If α, β and γ are the roots of the equation x3-3x2+3x+7=0, and w is cube root of unity, then the value of α-1β-1+β-1γ-1+γ-1α-1 is equal to

EASY
IMPORTANT

If ω is the cube root of unity, then value of the 1+ω-ω22+1-ω+ω22+1 is

HARD
IMPORTANT

If 1, w, w2 are the cube roots of unity and if α=w+2w2-3  then α3+12α2+48α+3=

HARD
IMPORTANT

If ω is a complex cube root of unity, then ω13+29+427++ω12+38+932+=

HARD
IMPORTANT

If z=3+i2 , then z101+i103105 is equal to

MEDIUM
IMPORTANT

If i= -1 then 4+5 -12+i32334-312+i32365 is equal to-

EASY
IMPORTANT

If ω is a cube root of unity, then the value of 1 +ω3-1 +ω23 is

EASY
IMPORTANT

If 1, ω, ω2 are the cube root of unity, then 1 +ω3-1 +ω23 is equal to -

EASY
IMPORTANT

If ω is a cube root of unity, then 3+5ω+3ω22+3+3ω+5ω22 is equal to -

EASY
IMPORTANT

-81/3 is equal to

EASY
IMPORTANT

If z+z-1=1 , then z50+z-50 is equal to 

EASY
IMPORTANT

If α is a complex number such that α2+α+1=0 , then α31 is equal to

MEDIUM
IMPORTANT

The value of -1+-362+-1--362 is :

MEDIUM
IMPORTANT

If 349 x+iy=32+32i100 and x=ky , then k is -

HARD
IMPORTANT

-1-1-1-...  is equal to

MEDIUM
IMPORTANT

If ω is a complex root of the equation z3=1, then  ω+ω12+38+932+27128+...  is equal to

MEDIUM
IMPORTANT

If ω=-1+3i2, then 3+ω+3ω24 is