麻烦高手给一点提示，自己看过多次，依然不懂教授要我做什麽，只知道 要画类似螺旋的图 The following parametric equations generate a conical helix x= t*cos(6t) y= t*sin(6t) z= t Compute values of x,y and z for t = 0 to 6pi with t=pi/64. Use subplot to generate a two dimensional line plot (red solid line) of (x,y) in the top pane and a three-dimensional line plot (cyan solid line) of (x,y,z) in the bottom pane. Label the axes for both plots. 顺便帮朋友PO他的，他也不了解教授的意思。 麻烦板上高手给点提示，并非要求解题，很少发文，如有冒犯多多提醒。 12. If the bunge jumper equation has been changed as: 1) where v is the velocity at time t, g is the gravitational force (= 9.81 kg/m2) and cd is the air drag coefficient (=0.25 kg/m) and m is the jumper’s mass (68.1 kg), and |v| is defined as: |v|= v if v >0 = -v if v <0 (i.e. it is an absolute operation) Also the position the jumper has at time t can be determined as 2) If it is assumed that the jumper’s initial position is defined as x(0) = 0 at t= 0 and the velocity at t = 0 is defined also as v(0) = - 40m/s Express equations 1) and 2) into differenec equations and then find 12.1) v(2), x(2) 12.2) v(4), x(4) --

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