Teaching DSSSB TGT Mock Test 2025 Engineering Mathematics Complex Variables Complex Functions

Which of the following statements is true regarding two complex numbers z1 and z2

1
|z1 + z2| is always greater than |z1|+|z2|
2
|z1 - z2| is always greater than |z1|-|z2|
3
|z1 + z2| ≤ |z1|+|z2|
4
|z1 - z2| ≤ |z1|-|z2|
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