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About Josh
Expertise When I work through problems, I emphasize principles and key ideas which I believe are worth noting. I will try to answer questions in the following areas, but not at the advanced level. Algebra. Sequences & Series. Trigonometry. Functions & Graphs. Coordinate Geometry. Quadratic Polynomials. Exponentials & Logarithms. Basic Calculus. Probability, Permutations and Combinations. Mathematical Induction. Complex numbers. Physics problems.
Experience
Experience: I have worked as a teaching assistant in college. My hope is that more people will share knowledge without boundary, give help without seeking recognition or monetary rewards.
Supplementary Website: See a selection of past questions in my maths repository under "Question Archive"
Education Credentials: Bachelor degree in Engineering Science.
"Everyone struggles with something."
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You are here: Experts > Science > Math for Kids > Basic Math > natural log question
Basic Math - natural log question
Expert: Josh - 10/28/2009
Question My equation is reduced to 4ln(600/P)=ln(75,000/P). I need to isolate the P but the 4 in the equation is throwing me off. Can you please help?
Answer Hi Nicole,
For any constant "a" and positive real-valued number "x", a*log(x) = log(x^a).
e.g., you can verify that log(64) = 2*log(8).
So, you can turn 4*ln(600/P) into ln[(600/P)^4].
Take the exponential function on both sides and go from there.
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