Original
Let {{MATH_64}} be a differentiable function that has an inverse. In the
table below we give several values for both {{MATH_65}} and {{MATH_66}}:
{{MATH_67}}
Compute
{{MATH_68}}
{{CMD_69}}
Note,
{{MATH_70}}
From the table above we see that
{{MATH_71}}
Hence, by the inverse function theorem
{{MATH_72}}
{{CMD_73}}
{{CMD_74}}