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Question: Unable to plot expression.

Question:Unable to plot expression.

Volker Lehner 25 Maple
units smartplot plotting
August 30 2017
0

Hi,

Although i can evaluate speed, displacement and accelleration, i can't plot these functions.

The error message is:

What am i doing wrong in my definitions?

Thank you in advance.


 

"with(Units[Simple]):"

v := proc (t) options operator, arrow; Units:-Simple:-`*`(Units:-Simple:-`*`(Units:-Simple:-tanh(Units:-Simple:-`*`(Units:-Simple:-`+`(Units:-Simple:-`*`(Units:-Simple:-`*`(t, Units:-Simple:-sqrt(F)), Units:-Simple:-sqrt(c)), Units:-Simple:-`*`(Units:-Simple:-arctanh(Units:-Simple:-`*`(Units:-Simple:-`*`(v__0, Units:-Simple:-sqrt(c)), Units:-Simple:-`/`(Units:-Simple:-sqrt(F)))), m__0)), Units:-Simple:-`/`(m__0))), Units:-Simple:-sqrt(F)), Units:-Simple:-`/`(Units:-Simple:-sqrt(c))) end proc:

NULL

NULL

NULL

F := 2800.0*Unit('N')

 

c := .7*Unit('kg'/'m') 

 

m__0 := 1400*Unit('kg') 

NULL

v__0 := 10*Unit('m'/'s')

v__e := v(120*Unit('s')) 

t__0 := 0*Unit('s')

``

``

v__e = 63.19906538*Units:-Unit(m/s)"(->)"63.199*Units:-Unit(m/s)

NULL

``

a := proc (t) options operator, arrow; Units:-Simple:-`*`(Units:-Simple:-`*`(F, Units:-Simple:-`+`(1, Units:-Simple:-`-`(Units:-Simple:-`^`(Units:-Simple:-tanh(Units:-Simple:-`*`(Units:-Simple:-`+`(Units:-Simple:-`*`(Units:-Simple:-`*`(t, Units:-Simple:-sqrt(F)), Units:-Simple:-sqrt(c)), Units:-Simple:-`*`(Units:-Simple:-arctanh(Units:-Simple:-`*`(Units:-Simple:-`*`(v__0, Units:-Simple:-sqrt(c)), Units:-Simple:-`/`(Units:-Simple:-sqrt(F)))), m__0)), Units:-Simple:-`/`(m__0))), 2)))), Units:-Simple:-`/`(m__0)) end proc:

NULL

a__e := a(120*Unit('s'))

NULL

a__e = 0.2939066600e-2*Units:-Unit(m/s^2)"(->)"0.29391e-2*Units:-Unit(m/s^2)

``

"`s__a`(t):=(∫)[`t__0`]^t(tanh((tau sqrt(F) sqrt(c)+arctanh((`v__0` sqrt(c))/(sqrt(F))) `m__0`)/`m__0`) sqrt(F))/(sqrt(c)) ⅆtau:"

NULL

s__e := s__a(120*Unit('s'))

NULL

s__e = 6497.492630*Units:-Unit(m)"(->)"6497.5*Units:-Unit(m)

NULLNULL

 

v(2*Unit('s')) = 13.85629668*Units:-Unit(m/s)"(->)"13.856*Units:-Unit(m/s)

NULL

NULL

"Z(t):=[[[`s__a`(t)],[v(t)],[a(t)]]]:"

NULL

Vektor für Weg, Geschwindigkeit und Beschleunigung:

``

Z(120*Unit('s')) = Matrix(%id = 4626704194)NULL

NULL

NULL

v(t)"->"

NULL

NULL

NULL

NULL

NULL

NULL

NULL

``

NULL

NULL


 

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