I dont have any idea how to start this equation. How can i simplify this equation?? (sorry my english)
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Originally Posted by Fabio010 I dont have any idea how to start this equation. How can i simplify this equation?? (sorry my english) Are you familiar with the laws of logarithms? and, because the logarithm is a one-to-one function:
never mind. I dont know why but in my head ln(a) + ln (b) = ln (ab) if a = b... sorry.
What you do need to think about is that logarithm is a "one to one" function. That is, ln(a)= ln(b) if and only if a= b.
Originally Posted by Fabio010 never mind. I dont know why but in my head ln(a) + ln (b) = ln (ab) sorry. That rule holds for all positive a and b. For example which is what we'd expect from adding them separately.
So: ?
Originally Posted by Fabio010 So: ? Yep, fine thus far. Now solve the quadratic bearing in mind any restrictions on the domain.
Ok thanks for the help !
Originally Posted by Fabio010 Ok thanks for the help ! For reference the answer is
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