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Suppose m = 2 + 6i, and | m + n | = 3√10, where n is a complex number.

 

a) what is the minimum value of the modulus of n?

b) provide one example of the complex number, n.

 

 

For a, I got √10 for the minimum value of modulus n.

Here's my work:


| 2 + 6i + n | = 3√10

- 2 + 6i         - 2 + 6i

n = 3√10 - 2 + 6i

 

I then found the modulus of -2+6 and got 2√10, and replaced it, so I can solve the rest of the equation.

 

n = 3√10 - 2√10

n = √10

 

 

For b, I'm not really sure what it means by providing an example. I tend to overthink things, so if someone could maybe explain and help me, that would be appreciated! (And if I somehow got a wrong, please tell me what I did wrong! Thank :)

 
 May 15, 2020

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