一空间曲线由参数方程 x=t y=sin(2t) , -3<t<3 z="cos(3t*t)"> A、t=-3:0.1:3; x=t; y=sin (2*t); z=cos (3*t.*t); plot3(x, y, z, t)
B、t=-3:0.1:3; x=t; y=sin (2*t); z=cos (3*t*t); plot3(x, y, z)
C、t=-3:0.1:3; y=sin (2*t) z=cos (3*t.*t) plot3 (t, y, z)
D、t=-3:0.1:3; x=t; y=sin (2*t); z=cos (3*t.*t); plot3(x, y, z)