来自高虹的问题
抛物线x2=4y在点(2,1)处的切线的纵截距为()A.-1B.1C.12D.-12
抛物线x2=4y在点(2,1)处的切线的纵截距为()
A.-1
B.1
C.12
D.-12
1回答
2020-12-28 05:57
抛物线x2=4y在点(2,1)处的切线的纵截距为()A.-1B.1C.12D.-12
抛物线x2=4y在点(2,1)处的切线的纵截距为()
A.-1
B.1
C.12
D.-12
∵抛物线x2=4y,∴y