If \(\log_{10}y + 3\log_{10}x \geq \log_{10}x\), express y in terms of x.

Assessment: WAEC SSCE - Further Mathematics - 2016 (Objective) Subject: Further Mathematics

Question 1 Report

If \(\log_{10}y + 3\log_{10}x \geq \log_{10}x\), express y in terms of x.

Answer Details
We can start by using the logarithmic rule that states: \(\log_{a}b + \log_{a}c = \log_{a}(bc)\). So, we can rewrite the given inequality as follows: \[\log_{10}y + 3\log_{10}x \geq \log_{10}x\] \[\Rightarrow \log_{10}(yx^{3}) \geq \log_{10}x\] \[\Rightarrow yx^{3} \geq x\] Dividing both sides by \(x\) (since \(x > 0\)), we get: \[yx^{2} \geq 1\] \[\Rightarrow y \geq \frac{1}{x^{2}}\] Therefore, the answer is \(y \geq \frac{1}{x^{2}}\).

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