show that :

if Re (z1) >0 and Re( z2) >0 then :

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- Jul 5th 2009, 11:08 PM #1

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- Jul 6th 2009, 04:33 AM #2

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- Jul 6th 2009, 08:09 AM #3

- Jul 7th 2009, 11:32 AM #4

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- Jul 7th 2009, 07:48 PM #5

There are four cases:

(1) ,

then we have,

(2)

then we have,

(3)

then we have,

(4)

then we have,

Now,if sum of arguments( ) is less than ,

And,if sum of arguments( ) is equal to or more than ,

Originally Posted by**flower3**

- Jul 7th 2009, 10:33 PM #6

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- Jul 7th 2009, 10:43 PM #7