Maths · Binomial theorem for a positive integral index

The approximate value of ^{3000} \) is

The approximate value of \( (1.0002)^{3000} \) is

  • A. 1.2
  • B. 1.4
  • C. 1.6
  • D. 1.8

Step-by-step solution

Using the binomial expansion (1+x)^n ≈ 1 + nx for small x, we get (1.0002)^3000 ≈ 1 + 3000×0.0002 = 1.6. However, since nx = 0.6 is not extremely small, a better approximation uses the exponential: (1.0002)^3000 ≈ e^{3000×ln(1.0002)} ≈ e^{0.6} ≈ 1.822. The closest option is 1.8. Alternatively, including the second-order term n(n-1)x^2/2 gives about 0.18, so total ≈ 1.78, again closest to 1.8.
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