20. Consider lines €1 and l2. l1 : [x, y] = [1, 4] + [[-7, 2] l2 : [x, y] = [-2, 6] + t[k, 9] a) For what value of k are the lines parallel? b) For what value of k are the lines perpendicular?
20. Consider lines €1 and l2. l1 : [x, y] = [1, 4] + [[-7, 2] l2 : [x, y] = [-2, 6] + t[k, 9] a) For what value of k are the lines parallel? b) For what value of k are the lines perpendicular?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![20. Consider lines l¡ and l2.
l1 : [x, y] = [1, 4] + t[-7, 2]
l2 : [x, y] = [-2, 6] + t[k, 9]
a) For what value of k are the lines
parallel?
b) For what value of k are the lines
perpendicular?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fec431756-5f8c-4456-baab-7c50f2a9fa51%2Fa8d0e8b3-c2de-41ec-a7b8-1297cc0cf2b1%2Flp1sg1_processed.png&w=3840&q=75)
Transcribed Image Text:20. Consider lines l¡ and l2.
l1 : [x, y] = [1, 4] + t[-7, 2]
l2 : [x, y] = [-2, 6] + t[k, 9]
a) For what value of k are the lines
parallel?
b) For what value of k are the lines
perpendicular?
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