答案:B
解析:
Division by 0 is not defined, so y=((x+1)*(x-2))/((x+3)*(x-4)) is not defined when (x+3)*(x-4)=0. The product (x+3)*(x-4) is equal to 0 if x=-3 or if x=4. Therefore, y is defined for all of the choices except -3.
您现在的位置: 首页 > SAT > SAT每日一题 > 正文
答案:B
解析:
Division by 0 is not defined, so y=((x+1)*(x-2))/((x+3)*(x-4)) is not defined when (x+3)*(x-4)=0. The product (x+3)*(x-4) is equal to 0 if x=-3 or if x=4. Therefore, y is defined for all of the choices except -3.