问题:
与直线2x-y+4=0的平行的抛物线y=x 2的切线方程是( )
A.2x-y+3=0
B.2x-y-3=0
C.2x-y+1=0
D.2x-y-1=0
与直线2x-y+4=0的平行的抛物线y=x 2的切线方程是( )
A.2x-y+3=0 | B.2x-y-3=0 | C.2x-y+1=0 | D.2x-y-1=0 |
参考答案: