若x与y互为倒数,a与b互为相反数,试求axy+b+x^2y^2
问题描述:
若x与y互为倒数,a与b互为相反数,试求axy+b+x^2y^2
列式也要啊
答
x与y互为倒数,则xy=1
a与b互为相反数,a+b=0
axy+b+x^2y^2 = a +b +(xy)^2 = 0+1^2 =1