Finding the subnormal using Descartes normal method

[Kak-Hazhar]

Homework Statement

find the subnormal using Descartes normal method.

Homework Equations

f\left( x \right)\; =\; \frac{1}{x},\;

The Attempt at a Solution

i get an 4th degree equation in x!

however this is my first post and i really wanted to try the LateX thing. first time.

Homework Statement

Homework Equations

The Attempt at a Solution

 

[Kak-Hazhar]

obviously i suck at LateX

 

[Mark44]

Is the function f(x) = 1/x?

How is the subnormal defined? I've never heard of it, or the Descartes normal method, either. Possibly you are using different terminology.