matlab查找数组中大于某个数的位置

>> k2=[1,4,2,7,6.6,7.8,3.2,5.6,9,11,14,17,2,7]

k2 =

    1.0000    4.0000    2.0000    7.0000    6.6000    7.8000    3.2000    5.6000    9.0000   11.0000   14.0000   17.0000    2.0000    7.0000

>> 
>> 
>> n2=find(k2>=5)

n2 =

     4     5     6     8     9    10    11    12    14

>>