complex numbers

find the amplitude of 1+\frac{\sqrt{3}i }{\sqrt{3}+i}

32 Answers

1
°ღ•๓яυΠ·

haan ji A =B=1
:D

1
krish1092 ·

{\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•๓яυΠ·

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

1
Anuj ·

39
Dr.House ·

nahiin ji sry. nahiin aaara. magar answer toh z3 hi hain

1
°ღ•๓яυΠ·

o aapko aara hai kya answer ?

39
Dr.House ·

nahiin ji answer z3 hain

39
Dr.House ·

soln for ii question

i= (eiÎ /2)i =e-Î /2

1
°ღ•๓яυΠ·

z^2

39
Dr.House ·

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•๓яυΠ·

yeh hi toh answer hai arey A aur B poche hai :P

1
Anuj ·

1+ω+ω2=0 therefore ge =(-ω2)7
=-ω14 =-ω2
=1+ω=A+Bω

i was able to olve till that..wt after that????

39
Dr.House ·

ha anuj post karna

1
Anuj ·

integration definite hai.........i mean she'z correct...............shall i post whole solution???????

for 1t Q

39
Dr.House ·

one of the values of ii is

a]e-Î /2

b]eÎ /2

c]eÎ

d]e

39
Dr.House ·

1+ω+ω2=0 therefore ge =(-ω2)7
=-ω14 =-ω2
=1+ω=A+Bω

A=B=1

1
°ღ•๓яυΠ·

amplitude matlab angle na tan wala

21
tapanmast Vora ·

Hey Matie, inte : PL. see c this :

http://targetiit.com/iit_jee_forum/posts/sum1_pl_explain_this_2me_3321.html

1
°ღ•๓яυΠ·

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 ·

A= 1 AUR B=1 tapan tujhe?

1
°ღ•๓яυΠ·

wat kya?

39
Dr.House ·

kya???????????????????????????????????????????????????????????

1
°ღ•๓яυΠ·

meko bhi wahi aaya tha :D

1
°ღ•๓яυΠ·

A and Bboth r 18

21
tapanmast Vora ·

arctan(3/(4+√3)
=27.626°
wats da ans?

39
Dr.House ·

nahiin

1
°ღ•๓яυΠ·

options hai kya

39
Dr.House ·

sry

39
Dr.House ·

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 --------------

1
°ღ•๓яυΠ·

is it

arc tan(3/(4+√3))

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