Question:medium

If \( Z = f(x + ay) + \phi(x - ay) \), then

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When differentiating functions of the form \( f(x \pm ay) \), use the chain rule and remember to apply the appropriate factor when differentiating with respect to \( x \) or \( y \).
Updated On: Apr 22, 2026
  • \( Z_{xx} = Z_{yy} \)
  • \( Z_{xx} = a^2 Z_{yy} \)
  • \( Z_{yy} = a^2 Z_{xx} \)
  • None of these
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The Correct Option is C

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