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Further complex numbers — Question 295

Original QCE Vault practice · 1 mark

Q295 · Practice questionTechnology-freeSimple familiar1 mark

QUESTION 295

Which example shows that ∣z+w∣=∣z∣+∣w∣|z+w|=|z|+|w| is not true for every pair of complex numbers?
(A)
z=1z=1, w=2w=2
(B)
z=iz=i, w=2iw=2i
(C)
z=1z=1, w=−1w=-1
(D)
z=0z=0, w=iw=i
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