Question

michele

Given the function f(x) = 0.3(4)^x, what is the value of f–1^(6)?

Answer 1

@Michele_Laino

Answer 2

f-1

Answer 3

i think

Answer 4

is answer this michele? 2.312

Answer 5

here we have:
\[\Large {f^{ - 1}}\left( x \right) = \frac{{{{\log }_{10}}\left( {\frac{{10x}}{3}} \right)}}{{{{\log }_{10}}4}}\]
so we get:
\[\Large {f^{ - 1}}\left( 6 \right) = \frac{{{{\log }_{10}}\left( {\frac{{10 \times 6}}{3}} \right)}}{{{{\log }_{10}}4}} = \frac{{{{\log }_{10}}\left( {20} \right)}}{{{{\log }_{10}}4}} = 2.16\]

Answer 6

good thanks michele!

Answer 7

thanks! @sallyfield888