1
krish1092
·2009-03-12 21:24:22
{\color{red}Given \ z=\frac{\sqrt3+i}{2}}
\Longrightarrow z=cos(\frac{\pi}{6})+isin(\frac{\pi}{6}) \\ z^{102}=cos(\frac{102\pi}{6})+isin(\frac{102\pi}{6}) \\ z^{102}=-1 \Longrightarrow z^{101}=\frac{-1}{z} \\ \text{Subsitute in the given expression} \\ (\frac{-1}{z}-i)^{105} \\ \\ \text{Take minus common} \\ \Longrightarrow (-1) (\frac{1+zi}{z})^{105} \\ \text{Substitute the value of z,After simplification,we will get} \ (-1)z^{105} \\ \Longrightarrow (-1)z^{102}z^{3} \\ \Longrightarrow z^3
1
°ღ•๓ÑÏ…Î
·2009-03-12 12:58:58
aacha koi ni try d way i id may b m makin sum cal mistake
z=(i+√3 )/2 zi= w^2..............
.. (or w.........m confused :( )
so then (z101 +i103 )105
isse solve karo
39
Dr.House
·2009-03-12 12:54:04
nahiin ji sry. nahiin aaara. magar answer toh z3 hi hain
39
Dr.House
·2009-03-12 12:41:22
12] \large z=\frac{\sqrt{3}+i}{2}
\large \left(z^{101}+i^{103} \right)^{105}=?
a]z
b]z2
c]z3
d]z4
1
°ღ•๓ÑÏ…Î
·2009-03-12 12:39:46
yeh hi toh answer hai arey A aur B poche hai :P
1
Anuj
·2009-03-12 12:38:41
1+ω+ω2=0 therefore ge =(-ω2)7
=-ω14 =-ω2
=1+ω=A+Bω
i was able to olve till that..wt after that????
1
Anuj
·2009-03-12 12:33:44
integration definite hai.........i mean she'z correct...............shall i post whole solution???????
for 1t Q
39
Dr.House
·2009-03-12 12:28:40
one of the values of ii is
a]e-Î /2
b]eÎ /2
c]eÎ
d]e-Î
39
Dr.House
·2009-03-12 12:26:13
1+ω+ω2=0 therefore ge =(-ω2)7
=-ω14 =-ω2
=1+ω=A+Bω
A=B=1
1
°ღ•๓ÑÏ…Î
·2009-03-12 12:10:12
amplitude matlab angle na tan wala
21
tapanmast Vora
·2009-03-12 12:24:28
Hey Matie, inte : PL. see c this :
http://targetiit.com/iit_jee_forum/posts/sum1_pl_explain_this_2me_3321.html
1
°ღ•๓ÑÏ…Î
·2009-03-12 12:24:23
hey sorry re doin
i wrte 21 on ma paper n took taht as 4 woh 4 ki atrh dikh ra tha
39
Dr.House
·2009-03-12 12:23:54
A= 1 AUR B=1 tapan tujhe?
39
Dr.House
·2009-03-12 12:22:21
kya???????????????????????????????????????????????????????????
21
tapanmast Vora
·2009-03-12 12:21:19
arctan(3/(4+√3)
=27.626°
wats da ans?
39
Dr.House
·2009-03-12 12:15:21
2] if ω is a complex cube root of unity, and
\large \left(1+\omega \right)^{7}=A+B\omega
then A and B are respectively --------------