Question
Check that S is a linearly independent set over . (Hint: Consider the equation
.
Put
, etc. and solve for ai. )
Answer :
Word Count : 132
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Skip in 10
Consider the set (S={\cos x,\sin x,x\cos x,x\sin x}). To check linear independence over (\mathbf{R}), assume a linear combination equals zero for all (x): [ a_0\cos x+a_1\sin x+a_2 x\cos x+a_3 x\sin x=0 \quad
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