过点A(3,-2,1)和B(-1,0,2)的直线方程是()
A.-4(x-3)+2(y+2)+(x-1)=0 B.(x-3)/4=(y+2)/2=(z-1)/1 C.(x+1)/4=y/2=(z-2)/-1 D.(x+1)/-4=y/2=(z-2)/1正确答案D
过点A(3,-2,1)和B(-1,0,2)的直线方程是()
A.-4(x-3)+2(y+2)+(x-1)=0 B.(x-3)/4=(y+2)/2=(z-1)/1 C.(x+1)/4=y/2=(z-2)/-1 D.(x+1)/-4=y/2=(z-2)/1正确答案D