These solutions may offer step-by-step problem-solving explanations or good writing examples that include modern styles of formatting and construction of bibliographies out of text citations and references. Students may use these solutions for personal skill-building and practice. Unethical use is strictly forbidden.lga+lgb ≤2*lgc -2 is equivalent with: lg(ab) ≤2*lgc -2 (according to property 1)
Moving further one step, this is equivalent to prove that:
2*lgc -lg(ab) ≥2 which is the same with lg(c^2) -lg(ab) ≥2 (property 3)...
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