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C2: 2 Logarithms Questions watch
- Thread Starter
- 29-12-2014 21:54
- 30-12-2014 03:29
Offline22ReputationRep:TSR Support Team
- TSR Support Team
- 30-12-2014 13:25
- 30-12-2014 13:36
9 (a) Try to put both sides of the equation in terms of a single log, as in, make the equation of the form
by combining the two log terms together using a well-known log rule.
Once you've done that, you can simply say that since the logs are the same bases.
(b) Do the same thing as above. Except note the use of a subtraction of logs instead of addition, combining the logs leads to...?
(c) Once you've found both x and y, this shouldn't be hard.
10. (a) The initial number of fish is just the amount of fish there was at the beginning, or at . At the beginning, t is equal to what? Substitute that in to find how many fish there was.
(b) You know that . Sub those into the equation given and re-arrange and manipulate to get c.
(c) For the fish to double in size, how would you interpret this mathematically, using your previous answers.
Ask if anything is still unclear.