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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Evaluate: ii(i37+1i67)

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प्रश्न

Evaluate: `("i"^37 + 1/"i"^67)`

मूल्यांकन
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उत्तर

`"i"^37 + 1/"i"^67`

`= ("i"^104 + 1)/"i"^67`

= `(("i"^2)^52 + 1)/("i"^66 xx "i")`

= `((-1)^52 + 1)/(("i"^2)^33 "i")`

= `(1 + 1)/((-1)^33 "i")`

= `2/(-"i")`

= `(-2)/"i"`

= `(-2)/"i" xx "i"/"i"`

= `(-2"i")/"i"^2`

= 2i  ...[∵ i2 = – 1]

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

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