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Algebra2D

Logarithms - Theory & Concepts - Logarithm Explorer

Rules of logarithms, natural logs, change of base formula, and solving logarithmic and exponential equations.

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Logarithms & Exponentials Explorer

Base (b)2

Domain: x>0x > 0

Base: b>1b > 1

Asymptote: The log curve approaches x=0x = 0 (the y-axis) but never touches it, because by0b^y \neq 0.

Identity: blogb(x)=xb^{\log_b(x)} = x

Logarithmic Function

y=log2(x)y = \log_{2}(x)

Exponential Function

y=2xy = 2^x

Reflection Line

y=xy = x
xy