Complex Numbers operations

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Complex Numbers operations

Postby lora » Sat Apr 20, 2013 5:37 pm

Complex Numbers, Operations with complex numbers - IB Mathematics HL

How can we find

given that
and


Thanks
lora
 
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Re: Complex Numbers operations

Postby lily » Sat Apr 20, 2013 6:12 pm

The sum (or the difference) of two complex numbers is the complex number which its real part is made up of the sum (or the difference) of their real parts and its imaginary parts is made up of the sum (or the difference) of their imaginary parts.




Therefore



The multiplication is performed as usual and using the fact that we have the following



and

lily
 
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Re: Complex Numbers operations

Postby lora » Sat Apr 20, 2013 6:17 pm

Thanks Lily!!
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