Python Coding Challenge - Question with Answer (ID 031126)

 

Explanation:

Step 1: Understanding Complex Numbers

Python supports complex numbers, which consist of two parts:

- Real part – the number without j.

- Imaginary part – the number multiplied by j.

In our code:

z = 3 + 4j

Here:

- 3 is the real part.

- 4 is the imaginary part.

- j represents the imaginary unit.

Step 2: Understanding z.real

z.real

The .real attribute returns the real part of a complex number.

Output:

3.0

Step 3: Understanding z.imag

z.imag

The .imag attribute returns the imaginary coefficient.

Output:

4.0

Step 4: Understanding the Exponent Operator **

Now consider:

z.imag ** 2

Since z.imag = 4.0, Python calculates:

\[

4.0^2 = 16.0

\]

Step 5: Understanding the Complete Expression

z.real + z.imag ** 2

Python follows operator precedence, so exponentiation happens before addition.

\[

3.0 + (4.0)^2

\]

\[

= 3.0 + 16.0

\]

\[

= 19.0

\]

Step 6: Understanding print()

The print() function displays the final calculated value.

3. Final Output

Output: 19.0

19.0

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