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#1 2008-11-02 23:38:57

eluru
Member
Registered: 2008-11-02
Posts: 7

roots of an equation.

x2 -x(cosθ{exp(iΔ)+exp(-iΔ)})+1=0
Can you plz help me in finding the roots of this equation.

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#2 2008-11-03 01:24:57

luca-deltodesco
Member
Registered: 2006-05-05
Posts: 1,470

Re: roots of an equation.

supposing the Δ is meant to be a θ


Last edited by luca-deltodesco (2008-11-03 01:30:07)


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#3 2008-11-03 02:45:25

eluru
Member
Registered: 2008-11-02
Posts: 7

Re: roots of an equation.

sorry this is the equation i,ve got after solving  matrix... so we canot take θ =Δ .

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#4 2008-11-03 03:11:53

luca-deltodesco
Member
Registered: 2006-05-05
Posts: 1,470

Re: roots of an equation.

Which variable(s) are you solving for exactly?


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#5 2008-11-03 05:49:01

eluru
Member
Registered: 2008-11-02
Posts: 7

Re: roots of an equation.

iam looking for the values of X.

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#6 2008-11-03 07:45:18

luca-deltodesco
Member
Registered: 2006-05-05
Posts: 1,470

Re: roots of an equation.

well then ignoring the steps i took in treating the two other variabels as being equal, eitherway it is still a quadratic in x which is standard to solve.


so in this case, a = 1, b = -cosθ{exp(iΔ)+exp(-iΔ)}, c = 1


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