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To find the inverse function
, we start by setting
. Then we can write:
Now, solve for
in terms of
:
-
Multiply both sides by 7:
-
Raise both sides to the power of 7:
Thus, we have:
And just to clarify the other options, there might be common misinterpretations.
Another common mistake is attempting to directly invert the
without properly isolating it first. Always remember to perform operations in reverse when finding an inverse – this means handling multiplication and division before considering roots or powers!