| General Discussion Undecided where to post - do it here. |
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01-01-2008, 04:20 PM
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#1 |
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 Maths Help
Find the set of values of x satisfying the inequality | 3^x - 8 | < 0.5 , giving 3 significant figures in your answer.
= 8 - 0.5 < 3^x < 8 + 0.5 = 7.5 < 3^x < 8.5 = lg 7.5 < x lg 3 < lg 8.5 = 0.875 - lg 3 < x < 0.929 + lg 3 = 0.398 < x < 1.406 Did I do this right or wrong? |
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