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# Maths Software? Vectors Watch

1. Are there any good maths software for plotting planes, points and vectors?
Cause im doing FP3 and im finding it hard to visualise some of the questions and think plotting them might make it easier.

I found this: http://www.bodurov.com/VectorVisualizer/
which is quite useful, but it can't plot planes and it doesn't calculate the distance between vectors.
2. Free 30 day trial of Autograph here.
3. (Original post by Mr M)
Free 30 day trial of Autograph here.
Appears to be very good at the moment. Although, when plotting a vector plane it wants it in the form: n = a + bs + ct (s and t being parameters)

I understand that the cross product of b and c will give you the normal vector to the plane N, but what I wanted to know is, is there anyway to find possible vectors for b and c if you have the normal vector? (basically the reverse)

Thanks

or is there a way to use autograph to plot in the form r.n = p?

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