90	n = 80
100	for i = 1 to n step 5
105		k = n-i
110		dim a(k,k), b(k,k)
115		start = cpu
120		mat a = rnd
130		mat b = inv(a)
140		print 'k: '; k; 'took '; cpu-start; 'seconds, det(b) = '; det(b)
150	next i
160	end
run
