Asked by angelica
                Find the inverse for graphing
y=f(x)=3^-x
            
        y=f(x)=3^-x
Answers
                    Answered by
            bobpursley
            
    x=1/3<sup>y</sup>
ln x = -y ln (3)
y= -lnx/ln3
check that.
    
ln x = -y ln (3)
y= -lnx/ln3
check that.
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