已知根号2≈1.414,根号3≈1.732,求3除以2倍根号3-2倍根号8分之一的近似值(精确到0.001)
问题描述:
已知根号2≈1.414,根号3≈1.732,求3除以2倍根号3-2倍根号8分之一的近似值(精确到0.001)
答
3/2根号3-2/根号1/8=3/2X1.732-1/1.414=0.159
答
3/根号3 - 1/根号8
= 根号3 - 1/(2 x 根号2)
= 1.732 - 1/(2 x 1.414)
= 1.378