The function is
. \ \
Differentiate with respect to
.

Let
point on the graph. \ \
If
is a point of tangency. \ \

Substitute
in the above equation. \ \

\
Newtons Formula : 

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.
Perform newton approximation for
.
Newtons formula :
.

.
Perform newton approximation for
.
Newtons formula :
.

.
Perform newton approximation for
.
Newtons formula :
.

.
The approximation that had total arrests of
thousands is
.