Express the following in the form of a + ib, a, b∈R i = −1. State the values of a and b: (1 + 2i)(– 2 + i) - Mathematics and Statistics

प्रश्न

Express the following in the form of a + ib, a, b ∈ R, i = $\sqrt{- 1}$ . State the values of a and b:

(1 + 2i)(– 2 + i)

बेरीज

उत्तर

(1 + 2i)(– 2 + i)

= – 2 + i – 4i + 2i²

= – 2 – 3i – 2 ...[∵ i² = – 1]

= – 4 – 3i

This is of the form a + bi, where a = – 4 and b = – 3.

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Concept of Complex Numbers

या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?

Q 4. (i)Q 3. (vi)Q 4. (ii)

पाठ 1: Complex Numbers - Exercise 1.1 [पृष्ठ ६]

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बालभारती Mathematics and Statistics 2 (Arts and Science) [English] 11 Standard Maharashtra State Board

पाठ 1 Complex Numbers
Exercise 1.1 | Q 4. (i) | पृष्ठ ६

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Express the following in the form of a + ib, a, b∈R i = −1. State the values of a and b: (1 + 2i)(– 2 + i) - Mathematics and Statistics

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Express the following in the form of a + ib, a, b∈R i = −1. State the values of a and b: (1 + 2i)(– 2 + i) - Mathematics and Statistics

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