How do you evaluate antilog 0.33736?

1 Answer
May 2, 2017

The inverse of a logarithm is exponentiation with its base.

Explanation:

For example the inverse of the base 10 logarithm, (log_10(x)), is 10^(log_10(x)) by the definition of any inverse this always gives us x:

10^(log_10(x)) = x

Another example

2^(log_2(x))=x

Suppose that we have an equation:

log_3(x-1) = 4

Make both sides of the equation an exponent of the base, 3:

3^(log_3(x-1)) = 3^4

The left side becomes the argument within the logarithm, x -1:

x-1 = 3^4

The right side becomes 81:

x-1 = 81

Add 1 to both sides:

x = 82

Another example with base e:

ln(x+2) = 2

Make both sides and exponent of the base, e:

e^(ln(x+2)) = e^2

The left side becomes x+2:

x+2 = e^2

Subtract 2 from both sides:

x = e^2-2

I hope that this helps