(1)2又1/5*(1/3-1/2)*3/11/1又1/3的值 (2)cos45*(-1/2)^-2-(2倍的根号2-根号3)^0+根号32的
问题描述:
(1)2又1/5*(1/3-1/2)*3/11/1又1/3的值 (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 的值
答
(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