1) Given the vector-valued function \r(t)=<< e^{-t},-et^{-t},t\ln t>> a- Evaluate

osi4a2nxk

osi4a2nxk

Answered question

2021-12-03

1) Given the vector-valued function r(t)=et,ett,tlnt
a- Evaluate limt0r(t) and Evaluate limtr(t)
b- Find r '(t) and evaluate r '(0)
c- Find r''(t)
d- Evaluate r(t)dt

Answer & Explanation

oces3y

oces3y

Beginner2021-12-04Added 21 answers

a- Evaluate the limits
limt0r(t)=limt0et,tet,tlnt
=limt0et,limt0tet,limt0tlnt
=e0,(0)e0,(0)ln0
=1,0,0
limtr(t)=limtet,tet,tlnt
=limtet,limttet,limttlnt
=
The limit does not exist because as tapproaches infinity, the limit of tIn(t) does not exist.
b- Find r'(t) and evaluate r'(0)
r(t)=ddtet,tet,tlnt
=ddt(et),ddt(tet),ddt(tlnt)
=et,=et+tet,ln(t)+1
r(t)=e0,e0+(0)0,ln(0)+1
=1,1,
The value of r’(0) is undefined
c- Find r''(t)
We have r(t)=et,et+tet,ln(t)+1
rt)=ddtet,et+tet

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