6)x^2 2(m-1)x m 1x=1 rcosA,y=-1 rsinA,r>0,A
问题描述:
6)x^2 2(m-1)x m 1x=1 rcosA,y=-1 rsinA,r>0,A
x(x-4)(x
答
f(2x 1)比方ax b|>c(c>0)比方y=lg[X √(x2 1)]若[x √(x2 1)][y (√y2 1)]=14y=28,则y=7