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Calculate logarithm of a number to any base:

* Use e for scientific notation. E.g: 5e3, 4e-8, 1.45e12

When:

*b ^{ y} = x*

Then the base b logarithm of a number x:

log* _{b }x* =

In order to calculate log^{-1}(y) on the calculator, enter the base b (10 is the default value, enter e for e constant), enter the logarithm value y and press the = or *calculate* button:

When

*y* = log_{b }x

The anti logarithm (or inverse logarithm) is calculated by raising the base b to the logarithm y:

*x* = log_{b}^{-1}(*y*) = *b ^{ y}*

log* _{b}*(

log* _{b}*(

log* _{b}*(

log* _{b}*(

log* _{b}*(

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Users write Now: This calculator is NOT INTENDED FOR GREAT ACTIONS! ! for example, the whole circled example 2 + 2 * 8 - YOU SHOULD WRITE 2 * 8 and then +2 ...

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