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Simplify the following: nin∑n=110in+50 - Mathematics

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प्रश्न

Simplify the following:

`sum_("n" = 1)^10 "i"^("n" + 50)`

बेरीज

उत्तर

`sum_("n" = 1)^10 "i"^("n" + 50) = sum_("n" = 1)^10 "i"^"n" * "i"^50`

= `sum_("n" = 1)^10 "i"^"n" * "i"^48 * "i"^2`

= `- 1[sum_("n" = 1)^10 "i"^"n"]`

= `- 1[("i" + "i"^2 + "i"^3 + "i"^4) + ("i"^5 + "i"^6 + "i"^7 + "i"^8) + "i"^9 + "i"^10]`

= `- 1[0 + 0 "i" + "i"^2]`

= `- 1("i" - 1)`

= 1 – i

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Introduction to Complex Numbers
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Complex Numbers - Exercise 2.1 [पृष्ठ ५४]

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सामाचीर कलवी Mathematics - Volume 1 and 2 [English] Class 12 TN Board
पाठ 2 Complex Numbers
Exercise 2.1 | Q 6 | पृष्ठ ५४
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