मराठी

Express the Following Complex Number in the Standard Form a + I B: ( 1 + I ) ( 1 + √ 3 I ) 1 − I .

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प्रश्न

Express the following complex number in the standard form a + i b:

\[\frac{(1 + i)(1 + \sqrt{3}i)}{1 - i}\] .

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उत्तर

\[\frac{\left( 1 + i \right)\left( 1 + \sqrt{3i} \right)}{1 - i}\]

\[ = \frac{\left( 1 + i \right)\left( 1 + \sqrt{3i} \right)}{1 - i} \times \frac{1 + i}{1 + i}\]

\[ = \frac{\left( 1 + \sqrt{3}i \right)\left( 1 + i^2 + 2i \right)}{1 - i^2} \left( \because i^2 = - 1 \right)\]

\[ = \frac{\left( 1 + \sqrt{3}i \right)2i}{2}\]

\[ = i\left( 1 + \sqrt{3}i \right)\]

\[ = i + \sqrt{3} i^2 \]

\[ = - \sqrt{3} + i\]

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पाठ 13: Complex Numbers - Exercise 13.2 [पृष्ठ ३१]

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आर.डी. शर्मा Mathematics [English] Class 11
पाठ 13 Complex Numbers
Exercise 13.2 | Q 1.06 | पृष्ठ ३१

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