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using logarithms to do evaluation

25:08

Laws of logarithms

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Expnential equations

36:38

Syisc Mathematics l Definite Integrals l Extra Problems l Set 1

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Circle theorem lesson A

12:41

Substitution and change of subject: lesson A

2:12:31

Equation of a circle

13:39

Substitution and change of subject: lesson 2