Prove
Asked by | 25th Aug, 2008, 12:18: PM
Expert Answer:
we know that 1+w+w2=0 and w3=1
so using these subsitute 1+w=-w2 and 1+w2=-w in L.H.S.
L.H.S.=(-w2-2w2)4+(-4w+w)4 = (-3w2)4 + (-3w)4 = 81(w8 + w4) = 81(w2+w) =81(-1)= -81
Answered by | 25th Aug, 2008, 07:10: PM
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change