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Introduction to Logarithms  Problem 3
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
Here we look at a variety of examples for how to move back and forth from log to exponential form. In order to do this successfully, you MUST know the definition of logs that tells you which parts of an exponential relationship go where in log form. Logs and exponential functions are inverses. "ln" means the natural log, or base "e," and if there is no base noted with the log, then there is an implied base 10. These problems address the most important foundational skills that you'll need for working with logarithmic and exponential functions.
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Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Your tutorials are good and you have a personality as well. I hope you have more advanced college level stuff, because I like the way you teach.”
Thanks alot for such great lectures... I never found learning this easier ever before... keep up the great work.... :)”
You seem so kind, it's awesome. Easier to learn from people who seem to be rooting for ya!' thanks”
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Sample Problems (5)
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Introduction to Logarithms
Problem 1 9,680 viewsPut into logarithmic form.
25 = 5²3^{4} = 1 81 
Introduction to Logarithms
Problem 2 7,477 viewsPut into exponential form:
log_{3}9 = 2log_{⅕}125 = 3 
Introduction to Logarithms
Problem 3 1,354 views 
Introduction to Logarithms
Problem 4 1,308 views 
Introduction to Logarithms
Problem 5 1,205 views
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