IIT JEE , AIEEE Forum - Mathematics , Algebra

donnowatnametochoose

If 1,w,w²,....w^n-1 are the n rootsm of unity then (1-w)(1-w²)...(1-w^n-1) equals

The value of the equation $2\sqrt{2}{x}^{4} = (\sqrt[]{3}-1)+i(\sqrt[]{3}+1) is$

The area of the triangle whose vertices are the points represented by the complex numbers Z₁,Z₂,Z₃ on the argand plane .

the expression $tan[ilog(\frac{a-ib}{a+ib})] reduces to$

The maximum distance from the origin of the co-ordinates to the point satisfying the equation $|z+\frac{1}{z}|=a$ is

donnowatnametochoose

SOME BODY PLEASE

aditi_g

can u post the answers if u have??? it wud be easier to post the solution thn...coz its no point posting the wrong solutions.....

donnowatnametochoose

Oui mademoiselle

n

$x=cos \frac{24n+5}{48} \pi +isin\frac{24n+5}{48}\pi$

$\Sigma\frac{|z2-z3||z1^2|}{4iz1}\\\:\\\frac{2ab}{a^2-b^2}\;$

aditi_g

1. x^n -1 =(x-1)(x-w)(x-w^2)..........
diffrentiate both sides
n x^n-1 = (X-w)(x-w^2).....[ one root is lost on differentiating]
put x=1 ull get
(1-w)(1-w^2)....=n
hope u have understood...

donnowatnametochoose

Ya thanks..pl the others too..

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