Calculating Wronskians -- Differential Equations Examples #9

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In the last problem, the wronskian is 0 when x=0
Doesn’t that contradict the fact that the wronskian is supposed to be never 0 on the interval of validity?

Happy_Abe
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it would have been easier to expand the determinant along the first column because it has a 0 (in fact you said you were going to do the first column but you did the first row)

schweinmachtbree