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Jul
13
accepted What does it matter that this angle is the smallest between these two vectors?
Jul
12
accepted Finding the intersection point between two lines using a matrix
Jul
12
comment Finding the intersection point between two lines using a matrix
Even if I only need two rows, if a third one happens to have an inconsistency, will that cause the equation to have no solution?
Jul
12
asked Finding the intersection point between two lines using a matrix
Jul
12
asked What does it matter that this angle is the smallest between these two vectors?
Jun
22
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Jun
15
accepted Getting the number of significant digits in a multiplication/division.
Jun
15
asked Getting the number of significant digits in a multiplication/division.
Jun
14
accepted Get the mass of air given the dimensions of a room.
Jun
14
asked Get the mass of air given the dimensions of a room.
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Oct
25
comment Does the line $(2,1,1)+t(-3,1,5)$ live within the plane $31x+3y+18z=62$?
@Galc127: The formula you posted, is that for calculating the orthogonal projection? In that case, don't I have to multiply the result by $(31,3,18)$, and then calculate the magnitude of the result?