graph TD A[导数的几何意义的应用]-->B[求曲线的切线]; A-->C(求参数的取值范围) subgraph C-->D[其他] end click A callback "Tooltip for a callback" click B "https://www.cnblogs.com/wanghai0666/p/9921940.html" "This is a tooltip for a link" B-->E[单切线] B-->F[公切线] click F "https://www.cnblogs.com/wanghai0666/p/9895043.html" "This is a tooltip for a link" F-->L[同一法] E-->G((过点处的切线

)) click G "http://www.cnblogs.com/wanghai0666/p/9837293.html#C3" "This is a tooltip for a link" E-->|点斜式得切线方程|H(在点处的切线

) click H "https://www.cnblogs.com/wanghai0666/p/9921940.html" "This is a tooltip for a link" subgraph G-->I[该点是切点] G-->J[该点不是切点] I-->K((设切点然后求切点

再代入切线求解)) J-->K end