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阿Q吧 > y=3x^2在(1,3)的切线斜率是多少

y=3x^2在(1,3)的切线斜率是多少

y=3x^2在(1,3)的切线斜率是多少

2025-03-16 05:38:01

推荐回答（2个）

回答1：

先求导，原函数的导函数是6x，当x=1是，导函数=6，所以在(1,3)的切线斜率就是6

回答2：

切线方程: y=6x-2 法线方程: y=-x/6+25/6 函数在某一点的导数就是该函数所代表的曲线在这一点上的切线斜率。曲线y=3X^2+1上任意一点切线的斜率满足方程 y=6x 点(1.4)处的切线斜率 k=6*1=6 令切线方程为y=6x+b, 将点(1.4)代入方程 4=6+b =>b=-2...

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