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PLEASEE HELP ME, ITS JUST ONE PROBLEM, PLEASE HELPPPP <3<3 !!!

If no transformations have been applied to f(x), what is the base of f(x)?


Enter your answer as the correct value, using the / symbol to indicate a fraction, if necessary.

PLEASEE HELP ME, ITS JUST ONE PROBLEM, PLEASE HELPPPP <3<3 !!! If no transformations-example-1
User Oxdeadbeef
by
4.5k points

1 Answer

5 votes

We can see that the function passes through the point
(2,-1). This implies that


\log_b(2)=-1

or, equivalently,


b^(-1)=2 \iff (1)/(b)=2 \iff b=(1)/(2)

The same conclusion could have been reached by observing that the function passes through
\left((1)/(2),1\right)

User Samiron
by
4.5k points