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posted by  BigWrigs on 9/2/2008 12:51:22 AM  |  status: Live  

Part (b) of problem 14

Course Textbook Chapter Problem
Calculus Calculus: Early Vectors - Preliminary Edition Early by Stewart, Belmonte, Boggess 11.4 14
Question Details:
(a)
Find the parametric equation for the line through (5,1,0) that is perpendicular to the plane 2x - y + z = 1. (part a was answered in the book solutions)

However I do not understand how to find part (b). please help : )

(b) In what points does this line intersect the coordinate planes?
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posted by radne on 9/2/2008 1:10:18 AM  |  status: Live
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Response Details:
From part a), equation of the line in


In parametric form




We are looking for when this line intersects the coordinate planes..  In other word, we want to know where the line passes through the planes x = 0, y = 0, and z = 0.   Starting with the intersection point for the plane z =0.   We know that the plane z =0 contains all points where the z coordinate is 0... Hence the z coordinate on our line must also be 0 when it intersects.  Setting z = 0


Using t=0, in the parametric equations for x and y, we find the x and y coordinates of the intersection.




Following the same procedure for the plane y = 0, by setting y =0






And for x = 0







Tags: Math, Calculus
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