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) Multiplying Complex Numbers: Find the product z₁z₂ of the complex numbers z₁=3(cosπ/4+isinπ/4) and z₂=2(cos3π/4+isin3π/4).

a) 6√2(cosπ/2+isinπ/2)
b) 6(cosπ/2+isinπ/2)
c) 6(cosπ/4+isinπ/4)
d) 6(cosπ+isinπ)

User Lolesque
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Final answer:

To find the product of complex numbers, multiply the real parts and imaginary parts separately and combine them. The product of z₁=3(cos(π/4)+i sin(π/4)) and z₂=2(cos(3π/4)+i sin(3π/4)) is 6√2(cos(π/2) + i sin(π/2)).

Step-by-step explanation:

To find the product of complex numbers, we multiply the real parts and imaginary parts separately and then combine them.

Given z₁=3(cos(π/4)+i sin(π/4)) and z₂=2(cos(3π/4)+i sin(3π/4)), we can calculate:

Real part of z₁z₂ = 3 × 2 × cos(π/4 + 3π/4)

Imaginary part of z₁z₂ = 3 × 2 × sin(π/4 + 3π/4)

Simplifying these expressions, we get:

Real part of z₁z₂ = 6√2 × cos(π/2)

Imaginary part of z₁z₂ = 6√2 × sin(π/2)

Therefore, the product z₁z₂ is 6√2(cos(π/2) + i sin(π/2)).

User Mark Lalor
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