[繪圖] 請問如何畫螺旋圖呢 ?
麻煩高手給一點提示，自己看過多次，依然不懂教授要我做什麼，只知道
要畫類似螺旋的圖
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.
順便幫朋友PO他的，他也不了解教授的意思。
麻煩板上高手給點提示，並非要求解題，很少發文，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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