# Linear Algebra: Vectors - Inner Product

Show that the functions x and x^2 are orthogonal in P5 with inner product defined by ( <p,q>=sum from i=1 to n of p(xi)*q*(xi) ) where xi=(i-3)/2 for i=1,...,5.

Show that ||X||1=sum i=1 to n of the absolute value of Xi.

Show that ||x||infinity= max (1<=i<=n) of the absolute value of Xi.

Thank you for your explanation.

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#### Solution Summary

Vector relations are proven given an inner product. The solution is detailed and well presented.

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