Question 4:
Express the given complex number in the form a + ib: 3(7 + i7) + i(7 + i7)
Answer
3(7 + i7) + i(7 + i7) = 21 + 21i + 7i + 7i2
= 21 +28i + 7 ×(−1) [∵ i2 = −1]
= 14 + 28i
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Question 4:
Express the given complex number in the form a + ib: 3(7 + i7) + i(7 + i7)
Answer
3(7 + i7) + i(7 + i7) = 21 + 21i + 7i + 7i2
= 21 +28i + 7 ×(−1) [∵ i2 = −1]
= 14 + 28i
Latest Govt Job & Exam Updates: