This page contains all questions and answers asked by students from this class. The most recent questions will be at the top.
Differentiate with respect to t.
Substitute into given differential equation,
Using the product to sum formula as shown here, we have
(ii) Since l is the common line of intersection on and , we need l to be on too. For that to happen,
1. l must be parallel to , that is, direction of l is perpendicular to normal to
2. Given that l is parallel to (since ), we need l to be on , so we need to be on
For 3 planes to have nothing in common, then l must be parallel to (Note: if l is not parallel, l will cut at a point, which means that 3 planes will cut at a point)
is on when
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