z=3−6iWhat are the real and imaginary parts of z ?Choose 1 answer:(A)Re(z)=3 and Im(z)=−6(B)Re(z)=−6 and Im(z)=3(C)Re(z)=3 and Im(z)=−6i(D)Re(z)=−6i and Im(z)=3
Q. z=3−6iWhat are the real and imaginary parts of z ?Choose 1 answer:(A)Re(z)=3 and Im(z)=−6(B)Re(z)=−6 and Im(z)=3(C)Re(z)=3 and Im(z)=−6i(D)Re(z)=−6i and Im(z)=3
Identifying the complex number: The complex number z is given as z=3−6i. To find the real and imaginary parts of z, we need to identify the terms without the imaginary unit i as the real part, and the terms with the imaginary unit i as the imaginary part.
Finding the real part: The real part of is the term without the imaginary unit , which is . Therefore, \text{Re}(z) = 333.
Finding the imaginary part: The imaginary part of z is the term with the imaginary unit i, which is −6-6−6i. However, when we refer to the imaginary part, we only take the coefficient of i, which is −6-6−6. Therefore, \text{Im}(z) = −6-6−6.
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