Re: its me again -.- help with another exponential question? :D
Originally Posted by ibdutt
Do you solve the last part with logarithms or have they not been taught when solving these? I just want to make sure I am not using anything that is ''not allowed''.
Re: its me again -.- help with another exponential question? :D
You don't need logarithms. It should be obvious that if then x= 1. (You do need to know that , for a positive, is a "one-to-one function" to know that x= 1 is the only solution.
Re: its me again -.- help with another exponential question? :D
Originally Posted by HallsofIvy
You don't need logarithms. It should be obvious that if then x= 1. (You do need to know that , for a positive, is a "one-to-one function" to know that x= 1 is the only solution.
Okay, so we don't need logarithm until the answer becomes more complicated..Like x=2/3 or something. Right?