z=−12i+11What are the real and imaginary parts of z ?Choose 1 answer:(A)Re(z)=11 and Im(z)=−12(B)Re(z)=11 and Im(z)=−12i(C)Re(z)=−12i and Im(z)=11(D)Re(z)=−12 and Im(z)=11
Q. z=−12i+11What are the real and imaginary parts of z ?Choose 1 answer:(A)Re(z)=11 and Im(z)=−12(B)Re(z)=11 and Im(z)=−12i(C)Re(z)=−12i and Im(z)=11(D)Re(z)=−12 and Im(z)=11
Identifying the Complex Number: The complex number is given as z=−12i+11. 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 the complex number z is the term without the imaginary unit i, which is 11. Therefore, Re(z)=11.
Finding the Imaginary Part: The imaginary part of the complex number z is the term with the imaginary unit i, which is −12i. However, when we refer to the imaginary part, we only take the coefficient of i, which is −12. Therefore, Im(z)=−12.
Matching with Given Choices: Now we can match our findings with the given choices. The correct choice should have Re(z)=11 and Im(z)=−12.
Correct Choice: Looking at the choices, we see that option (A) matches our findings: Re(z)=11 and Im(z)=−12.