Question: The functions cos x and sin x are both unit vectors in C[-Ï, Ï] with inner product defined by (a) Show that cos x ¥

The functions cos x and sin x are both unit vectors in C[-π, π] with inner product defined by
The functions cos x and sin x are both unit

(a) Show that cos x Š¥ sin x.
(b) Determine the value of ||cos x + sin x||2.

= | f(x)g(x)dx

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