#$1154.$ Vector expression derivatives

At a certain time instant, the vector vec$(a)(t)$ has

vec$(a)=3$hat$()-5$hat$()m$

vec$(a{)}^{}=-3$hat$()\frac{m}{s}.$

Matlab$/$Octave

Mathematica

Python

R

SymPy

from sympy import $*$

$a=$Matrix$([3,-5,0])$

aDot $=$Matrix$([-3,0,-0])$

At this same instant of time, what is hat$(a{)}^{}(t)?$

hat$(a{)}^{}(t)=$

$0$

$$

hat$()+$

$0$

$0\%$

hat$()s^{-1}$

Correct answer

hat$(a{)}^{}(t)=-0\mathrm{.}37830570252$hat$()+-0\mathrm{.}226983421512$hat$()s^{-1}$