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1 vote
Let f=cos^2x and g=sin^2x which of the following lie in the space spanned by f and g

a)cos2x
b)3+x^2
c)1
d)sinx
e)0 ...?

1 Answer

1 vote
I'm pretty sure that these are lying in the space spanned by f and g: a)cos2x, e)0. Use common formulas to check it.
User Nickoli Roussakov
by
8.6k points

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