题目

. Robert Owen was born in Wales in 1771. At the age of ten he went to work. His employer had a large Private library so Owen was able to educate himself. He read a lot in his spare time and at nineteen he was given the job of superintendent(监工) at a Manchester cotton mill. He was so successful there that he persuaded his employer to buy the New Lanark mill in Scotland. When he arrived at New Lanark it was a dirty little town with a population of 2,000 people. Nobody paid any attention to the workers' houses or their children's education. The conditions in the factories were very bad. There定义运算a⊕b=b，     a≤ba，     a＞b已知函数f（x）=x2⊕x，求f（2）=______．