（1）2又1/5*（1/3-1/2）*3/11/1又1/3
=11/5*（-1/6）*3/11*3/4
=-11/30*3/11*3/4
=-1/10*3/4
=-3/40
（2）cos45*(-1/2)^-2-(2倍的根号2-根号3)^0+根号32的绝对值+1/根号2
=1/2√2*4-1+4√2+1/2√2
=2√2-1+4√2+1/2√2
=13/2√2-1第（2）确定吗正确的