Rewrite the following exponential functions as logarithmic functions, and the logarithmic functions as exponential functions:

f(x)=(7/8)^x

b)
f(x)=log12x

c)
f(x)=log5/9x

1 answer

memorize this pattern:

2^3 = 8 <-----> log2 8 = 3

once you know it, these questions become easy

e.g.
y = (7/8)^x <---> log(7/8) y = x
y = log 12x <---> 10^y = 12x
etc