计算:-1/2的绝对值+(-1/2)^-1×sin45°+(根号下2009)°
问题描述:
计算:-1/2的绝对值+(-1/2)^-1×sin45°+(根号下2009)°
答
根号下2的绝对值+(-1/2)^-1×sin45°+(根号下2009)°
=√2+(-2)×√2/2+1
=√2-√2+1
=1