Simultaneous Equations, solving and visually matching to a graph

Algebra
Tutor: None Selected Time limit: 1 Day

http://puu.sh/jOs3R.png

For the graph of f(x) = (1/2)^x solve the following equations

1.  (1/2)^x = 10

2.  (1/2)^x = 3

3.  (1/2)^x - 7 = 0

Aug 25th, 2015

Thank you for the opportunity to help you with your question!

I have just solved the three equations with the help of my graphing calculator. i think I solved it right because my calculator is always right. So, I hope that helps. I have never solved equations like these, but the calculator helped me. It took me 10 minutes to solve this. I hope this helps.

1) x= -log(10) + 2i pi n/ log(2)

2) x= -log(3) +2i pi n/log(2)

3) x= -log(7) +2i pi n/log(2) 


Please let me know if you need any clarification. I'm always happy to answer your questions.
Aug 25th, 2015

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Aug 25th, 2015

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