How can I draw the complex number $z_1 = 2e^{{piover6}i -1}$












1












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I'm not sure how to draw the following number in the complex plane:



$$z_1 = 2e^{({piover6}i -1)}$$



My guess would be that you seperate the exponents:



$$z_1 = 2e^{({piover6}i)} e^{-1}$$



To get:



$$z_1 = frac{sqrt 3}{e} + frac{1}{e}i$$



So $ operatorname{Re}(z_1) =frac{sqrt 3}{e}$ and $ operatorname{Im}(z_1) =frac{1}{e}$.



Is this correct? This is part of a previous exam question, but my teacher doesn't provide any answers.










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  • $begingroup$
    Quite correct.${}$
    $endgroup$
    – Bernard
    Jan 27 at 12:44
















1












$begingroup$


I'm not sure how to draw the following number in the complex plane:



$$z_1 = 2e^{({piover6}i -1)}$$



My guess would be that you seperate the exponents:



$$z_1 = 2e^{({piover6}i)} e^{-1}$$



To get:



$$z_1 = frac{sqrt 3}{e} + frac{1}{e}i$$



So $ operatorname{Re}(z_1) =frac{sqrt 3}{e}$ and $ operatorname{Im}(z_1) =frac{1}{e}$.



Is this correct? This is part of a previous exam question, but my teacher doesn't provide any answers.










share|cite|improve this question











$endgroup$












  • $begingroup$
    Quite correct.${}$
    $endgroup$
    – Bernard
    Jan 27 at 12:44














1












1








1





$begingroup$


I'm not sure how to draw the following number in the complex plane:



$$z_1 = 2e^{({piover6}i -1)}$$



My guess would be that you seperate the exponents:



$$z_1 = 2e^{({piover6}i)} e^{-1}$$



To get:



$$z_1 = frac{sqrt 3}{e} + frac{1}{e}i$$



So $ operatorname{Re}(z_1) =frac{sqrt 3}{e}$ and $ operatorname{Im}(z_1) =frac{1}{e}$.



Is this correct? This is part of a previous exam question, but my teacher doesn't provide any answers.










share|cite|improve this question











$endgroup$




I'm not sure how to draw the following number in the complex plane:



$$z_1 = 2e^{({piover6}i -1)}$$



My guess would be that you seperate the exponents:



$$z_1 = 2e^{({piover6}i)} e^{-1}$$



To get:



$$z_1 = frac{sqrt 3}{e} + frac{1}{e}i$$



So $ operatorname{Re}(z_1) =frac{sqrt 3}{e}$ and $ operatorname{Im}(z_1) =frac{1}{e}$.



Is this correct? This is part of a previous exam question, but my teacher doesn't provide any answers.







calculus complex-numbers






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edited Jan 27 at 12:47









Larry

2,53531131




2,53531131










asked Jan 27 at 12:40









d salined saline

162




162












  • $begingroup$
    Quite correct.${}$
    $endgroup$
    – Bernard
    Jan 27 at 12:44


















  • $begingroup$
    Quite correct.${}$
    $endgroup$
    – Bernard
    Jan 27 at 12:44
















$begingroup$
Quite correct.${}$
$endgroup$
– Bernard
Jan 27 at 12:44




$begingroup$
Quite correct.${}$
$endgroup$
– Bernard
Jan 27 at 12:44










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$begingroup$

This is correct. You get the complex number $z$ with modulus $frac2e$ and argument $frac{pi}6$.






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    $begingroup$

    This is correct. You get the complex number $z$ with modulus $frac2e$ and argument $frac{pi}6$.






    share|cite|improve this answer









    $endgroup$


















      1












      $begingroup$

      This is correct. You get the complex number $z$ with modulus $frac2e$ and argument $frac{pi}6$.






      share|cite|improve this answer









      $endgroup$
















        1












        1








        1





        $begingroup$

        This is correct. You get the complex number $z$ with modulus $frac2e$ and argument $frac{pi}6$.






        share|cite|improve this answer









        $endgroup$



        This is correct. You get the complex number $z$ with modulus $frac2e$ and argument $frac{pi}6$.







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered Jan 27 at 12:46









        Chris CusterChris Custer

        14.2k3827




        14.2k3827






























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