# CHILD DEVELOPMENT PEDAGOGY

## GROWTH DEVELOPMENT CHILD

### SUMMATIVE ASSESSMENT

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the complex conjugate of 7-2i
 A -2i-7 B 2i-7 C -7 + 2i D 7 + 2i
Explanation:

Detailed explanation-1: -For the number 7 + 2i, the complex conjugate number is 7-2i. Therefore, the complex conjugate number is 7-2i.

Detailed explanation-2: -You find the complex conjugate simply by changing the sign of the imaginary part of the complex number. To find the complex conjugate of 4+7i we change the sign of the imaginary part. Thus the complex conjugate of 4+7i is 4-7i.

Detailed explanation-3: -As a general rule, the complex conjugate of a+bi is a−bi . Therefore, the complex conjugate of 7+2i is 7−2i .

Detailed explanation-4: -Explanation: To find a complex conjugate, simply change the sign of the imaginary part (the part with the i ). This means that it either goes from positive to negative or from negative to positive. As a general rule, the complex conjugate of a+bi is a−bi .