given that z=5-7i and w=2<-pi/3 1)State Im(z) 2)arg(w) 3)Modulo of w 4)convert z to polar form and w to cartesain form 5) calculate z-w zw z/w
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What do you mean by 2 <- pi/3?
its in polar form, 2<pi/3 is an complex number with an angle of pi/3 and length of 2
Originally Posted by Magical its in polar form, 2<pi/3 is an complex number with an angle of pi/3 and length of 2 Well then you need to write it as or . Anyway, what have you gotten so far?
exactly what uve got 2(cospi/3 +isinpi/3)
I mean, what have you tried for the answers to your questions?
i get 7 for part 1, dont know how to do part 2 or 3
7 is incorrect. It's actually -7. As for part 2 and 3, the "modulus" of a complex number is its size or length. How long is ? The "argument" is the angle made. What is the angle in this complex number?
the angle in the complex number is pi/3 and to find the length i would need to use root(a sqaured +b sqaures)
Originally Posted by Magical the angle in the complex number is pi/3 and to find the length i would need to use root(a sqaured +b sqaures) You can. It's a bit pointless though. Any complex number in Polar form has a modulus of .
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