Answer:

What I'm doing (More than likely wrong)

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- April 18th 2010, 08:24 PMdesiderius1Log/Exponential problem

Answer:

What I'm doing (More than likely wrong)

- April 18th 2010, 08:33 PMsa-ri-ga-ma
According to the answer, the given problem is wrong.

The equation should be equated to 10 rather than 7. - April 18th 2010, 08:37 PMFailure
This answer is wrong, assuming that you have managed to write down the correct equation that you were asked to solve.

Quote:

What I'm doing (More than likely wrong)

Quote:

- April 18th 2010, 08:58 PMdesiderius1
Sorry, there are two identical problems, one equating to 10 and the other 7, I misread while typing.

The problem is:

- April 19th 2010, 05:03 AMFailure
The easy way to solve this equation would be to recognize that the left side really is , and that the solution is simply .

Or else you can first multiply the equation by to get a quadratic equation for :

Thus, we get

But only the case is possible, thus we have