<s>
Rosenbrock	B-Algorithm
methods	I-Algorithm
refers	O
to	O
either	O
of	O
two	O
distinct	O
ideas	O
in	O
numerical	B-General_Concept
computation	I-General_Concept
,	O
both	O
named	O
for	O
Howard	O
H	O
.	O
Rosenbrock	O
.	O
</s>
<s>
Rosenbrock	B-Algorithm
methods	I-Algorithm
for	O
stiff	B-Algorithm
differential	I-Algorithm
equations	I-Algorithm
are	O
a	O
family	O
of	O
single-step	O
methods	O
for	O
solving	O
ordinary	O
differential	O
equations	O
.	O
</s>
<s>
The	O
idea	O
of	O
Rosenbrock	O
search	O
is	O
also	O
used	O
to	O
initialize	O
some	O
root-finding	O
routines	O
,	O
such	O
as	O
fzero	O
(	O
based	O
on	O
Brent	O
's	O
method	O
)	O
in	O
Matlab	B-Language
.	O
</s>
<s>
Rosenbrock	O
search	O
is	O
a	O
form	O
of	O
derivative-free	B-Algorithm
search	I-Algorithm
but	O
may	O
perform	O
better	O
on	O
functions	O
with	O
sharp	O
ridges	O
.	O
</s>
