(b) By determining constants c,, C2, C3 and c4, which are not all zero and are such that cifi(x) + c2f2(x) + c3f3(x) + c4f¾(x) = 0, show that the functions fi = x, fz = e*, f3 = xe*, fa = (2 – 3x)e* are linearly dependent. %3D -

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