GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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-2i-7
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2i-7
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-7 + 2i
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7 + 2i
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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 .
Detailed explanation-5: -Hence, The conjugate of the complex number (3+4i)(2−3i) is 18+i. Was this answer helpful?