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Geometric proof

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Please see the attached file.

Please kindly show each step of your solution. Thank you.

Give a geometric proof that D(x,y+cx)=D(x,y) for any scalar c

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Solution Summary

This shows how to provide a geometric proof regarding scalars.

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Please see the attachment.

Proof:

Look at the above figure.
In the parallelogram spanned by and , its area is .
In the ...

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