曲线y=cos x在点[img=46x43]18034a4fa69ffc3.png[/img]处的切线斜率=( )
A: [img=41x48]18034a4faf19128.png[/img]
B: [img=25x48]18034a4fb7b774c.png[/img]
C: [img=25x43]18034a4fc0eeef3.png[/img]
D: 1
A: [img=41x48]18034a4faf19128.png[/img]
B: [img=25x48]18034a4fb7b774c.png[/img]
C: [img=25x43]18034a4fc0eeef3.png[/img]
D: 1
举一反三
- 曲线y=cos x在点[img=46x43]1803b94e72abd50.png[/img]处的切线斜率=( ) A: [img=41x48]1803b94e7ac3a8b.png[/img] B: [img=25x48]1803b94e82346b5.png[/img] C: [img=25x43]1803b94e8a11cb3.png[/img] D: 1
- 求不定积分[img=121x54]17da653839aa6ae.png[/img]; ( ) A: log(x^2 + 3*x + 25/4)/4 + (5*atan(x/2 + 3/4))/4 B: log(x^2 + 3*x + 25/4)/4 C: (5*atan(x/2 + 3/4))/4 D: log(x^2 + 3*x + 25/4)/4 - (5*atan(x/2 + 3/4))/4
- 曲面[img=109x23]1803d350bf21608.png[/img]在点(2,1,0)处的切平面为( ) A: x + 2y - 1 = 0 B: x + y - 4 = 0 C: 2x + y - 4 = 0 D: x + 2y - 4 = 0
- 函数[img=139x26]1802e295592ab9d.png[/img] 在点(2,4)处的切线方程为( ) A: y=2 B: y=4 C: x=2 D: x=4
- 函数[img=139x26]17de92704a34c07.png[/img] 在点(2,4)处的切线方程为( ) A: y=2 B: y=4 C: x=2 D: x=4