Let y 1 = e3x and y 2 = xe3* . Which of the following statements is true about W(y 1, y 2) ? (a) W(y 1, y 2) = e6x , y 1 and y 2 are linearly dependent. (b) W(y 1,y 2) = 0, y 1 and y 2 are linearly independent. (c) W(y 1, y 2) = 0, y 1 and y 2 are linearly dependent. (d) W(y 1, y 2) = e6*, y 1 and y 2 are linearly independent. (e) None of these

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