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secondary 3 | A Maths
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I'm not sure how to do B1 part d), does anyone know how?
Date Posted: 4 years ago
Views: 207
You need to invert the log on the right
log2(x) = 4logx(2)
using the property loga(b) = 1/logb(a) ,
log2(x) = 4/log2(x)
(log2(x))² = 4
log2(x) = ±√4 = ±2
so x = 2² or x = 2‾²
x = 4 or x = ¼
log2(x) = 4logx(2)
using the property loga(b) = 1/logb(a) ,
log2(x) = 4/log2(x)
(log2(x))² = 4
log2(x) = ±√4 = ±2
so x = 2² or x = 2‾²
x = 4 or x = ¼
See 1 Answer
done
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Date Posted:
4 years ago
Oops, ignore what I wrote on top.
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