फाइंड द स्मालेस्ट नंबर बाय विच ईच ऑफ द फॉलोइंग नंबर वन बी मल्टीप्लाई टू अपडेट द क्यूब 2560
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Answer:
Its formula is ∛a ≈ x ((x3 + 2a)/(2x3 + a))
where,
a = number whose cube root is being calculated
x = integer guess of its cube root.
Here a = 2560
Let us assume x as 13
[∵ 133 = 2197 and 2197 is the nearest perfect cube that is less than 2560]
⇒ x = 13
Therefore,
∛2560 = 13 (133 + 2 × 2560)/(2 × 133 + 2560)) = 13.68
⇒ ∛2560 ≈ 13.68
Therefore, the cube root of 2560 is 13.68 approximately.
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