A. | B. |
C. | D. |
A.x-y-2=0 | B.x+y-2=0 |
C.x+4y-5=0 | D.x-4y-5=0 |
A.sin=cos | B.sin=-cos |
C.sin=cos | D.sin=-cos |
A.在点处的斜率; |
B.在点 ( x0,f ( x0 ) ) 处的切线与轴所夹的锐角正切值; |
C.点 ( x0,f ( x0 ) ) 与点 (0 , 0 ) 连线的斜率; |
D.曲线在点 ( x0,f ( x0 ) ) 处的切线的斜率. |
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