If f(x)=3x−7 then what is f−1(f−1(−1))?
If f(x)=3x−7 then find
f−1(f−1(−1))?
Let
y=3x−7y+73=xx=y+73soiff(x)=3x−7thenf−1(x)=x+73f−1(−1)=−1+73f−1(−1)=2f−1f−1(−1)=f−1(2)=9/3=3
f(x)=3x-7
f^{-1}(f^{-1}(-1))?
Thanks, Melody! I understand now
Here is a graphical representation of what is happening.
