The line in R³ through the point Po(xo, Yo, zo) and parallel to the vector v = parametric equations (vı, v2, V3) has x = x0 + tv1, y = Yo +tv2, z = 20 + tv3, -0

Algebra and Trigonometry (MindTap Course List)
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Chapter9: Vectors In Two And Three Dimensions
Section9.6: Equations Of Lines And Planes
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2. The line in R³ through the point Po(xo, Yo, zo) and parallel to the vector v = (v1, v2, V3) has
parametric equations
x = xo + tV1,
y = Yo + tv2,
z = 20 + tv3,
-0 <t < ∞.
(a) Show that we can rewrite the parametric equations without t as
- xo
Y – Yo
Vị
V2
V3
as long as v1, v2 and v3 are nonzero. These are known as the symmetric equations for the line
L.
(b) We can write the symmetric equations as two distinct equations:
x – x0
Y – Yo
y – Yo
z – 20
and
V1
V2
V2
V3
What kind of geometric objects in R³ do these two equations separately represent?
(c) Let L1 be the line through the point (xo, Yo, zo) = (1,0, –2) and parallel to v = (-1,3, 2).
Following the reasoning of (a) and (b) above, find two planes in R³ such that Li is their
intersection.
(d) Let L2 be the line through (x0, Yo, zo) = (1,0, –2) and v = (-1,3,0). Taking note that now
V3 = 0, find two planes in R such that L2 is their intersection.
Transcribed Image Text:2. The line in R³ through the point Po(xo, Yo, zo) and parallel to the vector v = (v1, v2, V3) has parametric equations x = xo + tV1, y = Yo + tv2, z = 20 + tv3, -0 <t < ∞. (a) Show that we can rewrite the parametric equations without t as - xo Y – Yo Vị V2 V3 as long as v1, v2 and v3 are nonzero. These are known as the symmetric equations for the line L. (b) We can write the symmetric equations as two distinct equations: x – x0 Y – Yo y – Yo z – 20 and V1 V2 V2 V3 What kind of geometric objects in R³ do these two equations separately represent? (c) Let L1 be the line through the point (xo, Yo, zo) = (1,0, –2) and parallel to v = (-1,3, 2). Following the reasoning of (a) and (b) above, find two planes in R³ such that Li is their intersection. (d) Let L2 be the line through (x0, Yo, zo) = (1,0, –2) and v = (-1,3,0). Taking note that now V3 = 0, find two planes in R such that L2 is their intersection.
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