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A line with a parametric vector equation


Finding a vector equation for a trajectoryHelp with finding range and equation of a position vector (projectile)Unit vector of an angle in plane polar coordinatesFinding an orthogonal basis w.r.t an inner productContinuity of matrix product with respect to matrix norm?Finding diagonal matrices with complex entriesVector Proof of Diagonals of a RhombusMatrix proof on the zero matrixVector Identities Question - concerning cross and dot productVector equation for a cone













-1












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I am struggling with this question. Any help would be greatly appreciated



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  • $begingroup$
    Please do not apply the algebraic-geometry tag to elementary problems involving algebra and geometry, as per the tag description.
    $endgroup$
    – KReiser
    Mar 11 at 18:30















-1












$begingroup$


I am struggling with this question. Any help would be greatly appreciated



enter image description here










share|cite|improve this question









New contributor




Sam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$











  • $begingroup$
    Please do not apply the algebraic-geometry tag to elementary problems involving algebra and geometry, as per the tag description.
    $endgroup$
    – KReiser
    Mar 11 at 18:30













-1












-1








-1





$begingroup$


I am struggling with this question. Any help would be greatly appreciated



enter image description here










share|cite|improve this question









New contributor




Sam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$




I am struggling with this question. Any help would be greatly appreciated



enter image description here







matrices vectors






share|cite|improve this question









New contributor




Sam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|cite|improve this question









New contributor




Sam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|cite|improve this question




share|cite|improve this question








edited Mar 11 at 18:30









KReiser

9,87121435




9,87121435






New contributor




Sam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked Mar 11 at 10:12









SamSam

305




305




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New contributor





Sam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Sam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











  • $begingroup$
    Please do not apply the algebraic-geometry tag to elementary problems involving algebra and geometry, as per the tag description.
    $endgroup$
    – KReiser
    Mar 11 at 18:30
















  • $begingroup$
    Please do not apply the algebraic-geometry tag to elementary problems involving algebra and geometry, as per the tag description.
    $endgroup$
    – KReiser
    Mar 11 at 18:30















$begingroup$
Please do not apply the algebraic-geometry tag to elementary problems involving algebra and geometry, as per the tag description.
$endgroup$
– KReiser
Mar 11 at 18:30




$begingroup$
Please do not apply the algebraic-geometry tag to elementary problems involving algebra and geometry, as per the tag description.
$endgroup$
– KReiser
Mar 11 at 18:30










2 Answers
2






active

oldest

votes


















1












$begingroup$

Do you know how a parametric equation works?



Hint



What does the value of (the parameter) $t$ have to be for the first coordinate to be $-8$?



Once you have this value of $t$, what is the value of the second coordinate?






share|cite|improve this answer









$endgroup$












  • $begingroup$
    I believe $t$ has to be -2?
    $endgroup$
    – Sam
    Mar 11 at 10:26






  • 1




    $begingroup$
    Correct, and then you know all the other coordinates as well.
    $endgroup$
    – StackTD
    Mar 11 at 10:27










  • $begingroup$
    Therefore the answer is $19$?
    $endgroup$
    – Sam
    Mar 11 at 10:29







  • 1




    $begingroup$
    Yes, that's right :-).
    $endgroup$
    – StackTD
    Mar 11 at 10:30



















1












$begingroup$

If $x_1=-8$, then we have $t=-2$.



Can you take it from here ?






share|cite|improve this answer









$endgroup$












  • $begingroup$
    so $x2=9+-2*-5=19$?
    $endgroup$
    – Sam
    Mar 11 at 10:29











  • $begingroup$
    Yes, we have $x_2=19.$
    $endgroup$
    – Fred
    Mar 11 at 10:33










Your Answer





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2 Answers
2






active

oldest

votes








2 Answers
2






active

oldest

votes









active

oldest

votes






active

oldest

votes









1












$begingroup$

Do you know how a parametric equation works?



Hint



What does the value of (the parameter) $t$ have to be for the first coordinate to be $-8$?



Once you have this value of $t$, what is the value of the second coordinate?






share|cite|improve this answer









$endgroup$












  • $begingroup$
    I believe $t$ has to be -2?
    $endgroup$
    – Sam
    Mar 11 at 10:26






  • 1




    $begingroup$
    Correct, and then you know all the other coordinates as well.
    $endgroup$
    – StackTD
    Mar 11 at 10:27










  • $begingroup$
    Therefore the answer is $19$?
    $endgroup$
    – Sam
    Mar 11 at 10:29







  • 1




    $begingroup$
    Yes, that's right :-).
    $endgroup$
    – StackTD
    Mar 11 at 10:30
















1












$begingroup$

Do you know how a parametric equation works?



Hint



What does the value of (the parameter) $t$ have to be for the first coordinate to be $-8$?



Once you have this value of $t$, what is the value of the second coordinate?






share|cite|improve this answer









$endgroup$












  • $begingroup$
    I believe $t$ has to be -2?
    $endgroup$
    – Sam
    Mar 11 at 10:26






  • 1




    $begingroup$
    Correct, and then you know all the other coordinates as well.
    $endgroup$
    – StackTD
    Mar 11 at 10:27










  • $begingroup$
    Therefore the answer is $19$?
    $endgroup$
    – Sam
    Mar 11 at 10:29







  • 1




    $begingroup$
    Yes, that's right :-).
    $endgroup$
    – StackTD
    Mar 11 at 10:30














1












1








1





$begingroup$

Do you know how a parametric equation works?



Hint



What does the value of (the parameter) $t$ have to be for the first coordinate to be $-8$?



Once you have this value of $t$, what is the value of the second coordinate?






share|cite|improve this answer









$endgroup$



Do you know how a parametric equation works?



Hint



What does the value of (the parameter) $t$ have to be for the first coordinate to be $-8$?



Once you have this value of $t$, what is the value of the second coordinate?







share|cite|improve this answer












share|cite|improve this answer



share|cite|improve this answer










answered Mar 11 at 10:16









StackTDStackTD

23.6k2154




23.6k2154











  • $begingroup$
    I believe $t$ has to be -2?
    $endgroup$
    – Sam
    Mar 11 at 10:26






  • 1




    $begingroup$
    Correct, and then you know all the other coordinates as well.
    $endgroup$
    – StackTD
    Mar 11 at 10:27










  • $begingroup$
    Therefore the answer is $19$?
    $endgroup$
    – Sam
    Mar 11 at 10:29







  • 1




    $begingroup$
    Yes, that's right :-).
    $endgroup$
    – StackTD
    Mar 11 at 10:30

















  • $begingroup$
    I believe $t$ has to be -2?
    $endgroup$
    – Sam
    Mar 11 at 10:26






  • 1




    $begingroup$
    Correct, and then you know all the other coordinates as well.
    $endgroup$
    – StackTD
    Mar 11 at 10:27










  • $begingroup$
    Therefore the answer is $19$?
    $endgroup$
    – Sam
    Mar 11 at 10:29







  • 1




    $begingroup$
    Yes, that's right :-).
    $endgroup$
    – StackTD
    Mar 11 at 10:30
















$begingroup$
I believe $t$ has to be -2?
$endgroup$
– Sam
Mar 11 at 10:26




$begingroup$
I believe $t$ has to be -2?
$endgroup$
– Sam
Mar 11 at 10:26




1




1




$begingroup$
Correct, and then you know all the other coordinates as well.
$endgroup$
– StackTD
Mar 11 at 10:27




$begingroup$
Correct, and then you know all the other coordinates as well.
$endgroup$
– StackTD
Mar 11 at 10:27












$begingroup$
Therefore the answer is $19$?
$endgroup$
– Sam
Mar 11 at 10:29





$begingroup$
Therefore the answer is $19$?
$endgroup$
– Sam
Mar 11 at 10:29





1




1




$begingroup$
Yes, that's right :-).
$endgroup$
– StackTD
Mar 11 at 10:30





$begingroup$
Yes, that's right :-).
$endgroup$
– StackTD
Mar 11 at 10:30












1












$begingroup$

If $x_1=-8$, then we have $t=-2$.



Can you take it from here ?






share|cite|improve this answer









$endgroup$












  • $begingroup$
    so $x2=9+-2*-5=19$?
    $endgroup$
    – Sam
    Mar 11 at 10:29











  • $begingroup$
    Yes, we have $x_2=19.$
    $endgroup$
    – Fred
    Mar 11 at 10:33















1












$begingroup$

If $x_1=-8$, then we have $t=-2$.



Can you take it from here ?






share|cite|improve this answer









$endgroup$












  • $begingroup$
    so $x2=9+-2*-5=19$?
    $endgroup$
    – Sam
    Mar 11 at 10:29











  • $begingroup$
    Yes, we have $x_2=19.$
    $endgroup$
    – Fred
    Mar 11 at 10:33













1












1








1





$begingroup$

If $x_1=-8$, then we have $t=-2$.



Can you take it from here ?






share|cite|improve this answer









$endgroup$



If $x_1=-8$, then we have $t=-2$.



Can you take it from here ?







share|cite|improve this answer












share|cite|improve this answer



share|cite|improve this answer










answered Mar 11 at 10:16









FredFred

48.3k1849




48.3k1849











  • $begingroup$
    so $x2=9+-2*-5=19$?
    $endgroup$
    – Sam
    Mar 11 at 10:29











  • $begingroup$
    Yes, we have $x_2=19.$
    $endgroup$
    – Fred
    Mar 11 at 10:33
















  • $begingroup$
    so $x2=9+-2*-5=19$?
    $endgroup$
    – Sam
    Mar 11 at 10:29











  • $begingroup$
    Yes, we have $x_2=19.$
    $endgroup$
    – Fred
    Mar 11 at 10:33















$begingroup$
so $x2=9+-2*-5=19$?
$endgroup$
– Sam
Mar 11 at 10:29





$begingroup$
so $x2=9+-2*-5=19$?
$endgroup$
– Sam
Mar 11 at 10:29













$begingroup$
Yes, we have $x_2=19.$
$endgroup$
– Fred
Mar 11 at 10:33




$begingroup$
Yes, we have $x_2=19.$
$endgroup$
– Fred
Mar 11 at 10:33










Sam is a new contributor. Be nice, and check out our Code of Conduct.









draft saved

draft discarded


















Sam is a new contributor. Be nice, and check out our Code of Conduct.












Sam is a new contributor. Be nice, and check out our Code of Conduct.











Sam is a new contributor. Be nice, and check out our Code of Conduct.














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