## When m=1 we should agree with powell_hessian1().

x = [4;5;6;7];
f1 = powell_hessian1(x);
f2 = extended_powell_hessian1(x);

unit_test_equals("(extended_)powell_hessian1 agree for m=1", ...
		 true, ...
		 f1 == f2);
