Elliott Love
07/10/2024 · Senior High School
3. Identifique, em cada número complexo \( z=a+b i \), sua parte real \( (a=\operatorname{Re}(z)) \) e sua parte imaginária \( (b=\operatorname{Im}(z)) \) e classifique-os como número real \( (b=0) \), número imaginário puro \( (a=0, b \neq 0) \) ou número imaginário \( (a \neq 0, b \neq 0) \). a) \( z=5+3 i \) b) \( z=-9 i \) c) \( z=7 \)
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a) \( z = 5 + 3i \): número imaginário
b) \( z = -9i \): número imaginário puro
c) \( z = 7 \): número real
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