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GATE Mathematics 2013 Paper

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Question : 54

Total: 65

Let W(y1,y2) be the Wronskian of two linearly independent solutions y1‌and‌y2 of the equation y′′+P(x)y′+Q(x)y=0.
The product W(y1,y2)P(x) equals

y2y1′′−y1y2′′
y1y2′−y2y1′
y1′y2′′−y2′y1′′
y2′y1′−y1′′y2′′

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