Academics – Mathematics : 2011/MAR/04
Question
Q4. (a) Evaluate without using tables or calculator: (5)
(5log25 - log125 + 1/2 log125)/3log5
(b) Solve for t in the following equation: (5)
log2t3- logt = log16 + logt
(c) The value £C of a piece of machinery after t years is given by:
C = 28000 e-0.115t
Calculate the number of complete years before its value is less than £10000. (6)
Asked in Year/Month/Ques No.
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