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krwlz · 10-13-2004, 07:39 AM

This one was on a test I just took, and I had to leave it blank, its driving me insane:

Find the point of intersection between a line with the equations:
X/2 = (Y-9) = (Z+1)/2

and the Plane:
x-y-z=4

Now, I dont necesarilly need the answer, but how the fuck do I solve this? Is it simply guess and check? I tried using the parametirc form of the line equations to set them equal to the the plane, but god damn, Im confused.

Also, the other one I had a problem with (since I havnt done integration or derivation all summer, and it was on the test)

take the derivative of t(cos(t))

10-13-2004, 07:39 AM	#1 (permalink)
krwlz Fledgling Dead Head Location: Clarkson U.	Calc 3 question This one was on a test I just took, and I had to leave it blank, its driving me insane: Find the point of intersection between a line with the equations: X/2 = (Y-9) = (Z+1)/2 and the Plane: x-y-z=4 Now, I dont necesarilly need the answer, but how the fuck do I solve this? Is it simply guess and check? I tried using the parametirc form of the line equations to set them equal to the the plane, but god damn, Im confused. Also, the other one I had a problem with (since I havnt done integration or derivation all summer, and it was on the test) take the derivative of t(cos(t))