Question
Download Solution PDFजर
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेले आहे:
x - (1/x) = (- 6)
वापरलेले सूत्र:
जर x - (1/x) = P, तर
x + (1/x) = √(P2 + 4)
जर x + (1/x) = P, तर
x3 + (1/x3) = (P3 - 3P)
x5 - (1/x5) = {x3 + (1/x3)} × {x2 - 1/x2} + {x - (1/x)}
गणना:
x - (1/x) = (- 6)
x + (1/x) = √{(- 6)2 + 4} = √40 = 2√10
अशाप्रकारे, x2 - 1/x2 = (x + 1/x) (x - 1/x) = 2√10 × (-6) = -12√10
आणि x3 + (1/x3) = (√40)3 - 3√40
⇒ 40√40 - 3√40 = 37 × 2√10 = 74√10
आता,
x5 - (1/x5) = {x3 + (1/x3)} × {x2 - 1/x2} + {x - (1/x)}
⇒ {74√10 × (-12√10)} + (- 6)
⇒ - 74 × 12 × (√10 × √10) - 6
⇒ (- 8880) - 6 = - 8886
∴ योग्य उत्तर - 8886 आहे.
Last updated on Jul 21, 2025
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