ข้อสอบ A-Level คณิตประยุกต์ 1 ปี 2560 (วิชาสามัญเก่า)

ข้อ 11

ถ้า straight z เป็นจำนวนเชิงซ้อน ซึ่งสอดคล้องกับสมการ straight z plus open vertical bar fraction numerator top enclose straight z minus 1 over denominator straight z minus 1 end fraction close vertical bar equals negative 3 plus 2 straight i  แล้ว open vertical bar straight z close vertical bar มีค่าเท่ากับข้อใดต่อไปนี้

รีวิว - เสียงตอบรับจากผู้เรียน

เฉลยข้อสอบ

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size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px equals size 12px minus size 12px i = a - bi


size 12px ด ั งน ั้ น size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px ผลบวกของจำนวนเช ิ งซ ้ อน size 12px thin space size 12px thin space size 12px z size 12px space size 12px equals size 12px z subscript size 12px 1 size 12px plus size 12px z subscript size 12px 2
size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px equals size 12px minus size 12px 2 size 12px i size 12px plus size 12px i
size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px space size 12px equals size 12px minus size 12px i

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