Please help me someone and no scams or else i will report
I z1 +z2 I< I z1 I + I z2 I
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z1 = 2 - i
z2 = 1 + i ,
|z1 + z2 + 1| /|z1 - z2 + 1|
= | (2 - i) + (1 + i) +1|/|(2 - i) -(1+ i) + 1 |
= | 4|/| 2 - 2i|
= 2/| 1 - i|
= 2/√{1²+ (-1)²} [ we know, z = ±a ± ib , |z| = √(a²+ b²) ]
= 2/√2
= √2
z2 = 1 + i ,
|z1 + z2 + 1| /|z1 - z2 + 1|
= | (2 - i) + (1 + i) +1|/|(2 - i) -(1+ i) + 1 |
= | 4|/| 2 - 2i|
= 2/| 1 - i|
= 2/√{1²+ (-1)²} [ we know, z = ±a ± ib , |z| = √(a²+ b²) ]
= 2/√2
= √2
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db2037:
What type of answer is this i want the proof of this formula
And it is not incorrect it is mentioned in a book
But the proof is not mentioned there so i am asking for your help
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