[img=134x93]1803346680aaa03.png[/img].dy/dx=
A: sint
B: cost
C: -tant
D: -cost
A: sint
B: cost
C: -tant
D: -cost
举一反三
- 1803346565160c0.png.dy/dx= A: sint B: cost C: -tant D: -cost
- 1设函数y=f(x)由参数方程x=cost,y=sint所确定,则为( ) A: tant B: -tant C: cot(t) D: -cot(t)
- (cost)^4*(sint)^2+(cost)^2*(sint)^4如何化简为(cost)^2*(sint)^2?麻烦告诉下,
- y=sint, x=[img=11x17]17e0aa5dde55a0f.jpg[/img],则y对x的导数y'(x)=( ) 未知类型:{'options': ['cost', ' 2t', ' [img=34x34]17e0aaf40f11485.jpg[/img]', ' [img=34x33]17e0aaf41870cfe.jpg[/img]'], 'type': 102}
- 由参数表达式[img=243x51]180342f1817f896.png[/img]所确定的函数对x的导数[img=39x44]180342f189ab225.png[/img] A: cot t B: tan t C: sint D: cost