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secondary 4 | A Maths
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Date Posted: 2 years ago
Views: 466
1.35 / 5 = 0.27 = 3³/10²
1.35 = 5×0.27
= 5 × 3³/10²
logₐ 1.35
= logₐ (5×0.27)
= logₐ 5 + logₐ 3³ - logₐ (2²×5²)
= 3logₐ 3 - 2logₐ 2 - logₐ 5
= 3×0.565 - 2×0.356 - 0.827
= 0.156
【a=b】
1.35 = 5×0.27
= 5 × 3³/10²
logₐ 1.35
= logₐ (5×0.27)
= logₐ 5 + logₐ 3³ - logₐ (2²×5²)
= 3logₐ 3 - 2logₐ 2 - logₐ 5
= 3×0.565 - 2×0.356 - 0.827
= 0.156
【a=b】
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