%Determine ankle Inflection Point for S curve


K=132.9
r=.144
l=52.71
syms t;
ff= K / (1 +  exp(-r* (t - l )));
f3= diff(diff(diff(ff)));
sInfPts= double(solve(f3))
%InflectPts=double(sInfPts)
InflectPt1= min(double(sInfPts))

f1=diff(ff)
f4= diff(diff(diff(diff(ff))))
sInfPts4= double(solve(f4))
InflectPt41= min(double(sInfPts4))




%{
f5= diff(diff(diff(diff(diff(ff)))));
sInfPts5= double(solve(f5))
InflectPt51= min(double(sInfPts5))

f6= diff(diff(diff(diff(diff(diff(ff))))));
sInfPts6= double(solve(f6))
InflectPt61= min(double(sInfPts6))

f7= diff(diff(diff(diff(diff(ff)))));
sInfPts7= double(solve(f7))
InflectPt71= min(double(sInfPts7))

%}