LAS-13 Math10
LAS-13 Math10
LAS-13 Math10
I. Concept/Digest
A logarithmic function is the inverse of an exponential function. An inverse means we solve
the equation for x.
II. EXAMPLE
y
The inverse of y = 2x (is x = 2 (x equals 2 to the y power). This, in turn, is equal to y = log 2 x
(logarithm to the base 2 of x).
Express the following into logarithmic form
1. 24=16 log216=4
3
2. 3 =27 log327=3
Express the following into exponential form
1. log416=2 42=16
2. log2x=4 24=x
III. EXERCISES
A. Write each exponential equation in logarithmic form.
1. 92 81 2. 3 27
3
3. x 1
0
log 1 8 3
4. log10 10 1 5. log12 144 2 6. 2