If \[y=a{{e}^{mx}}+b{{e}^{-mx}}\], then \[\frac{{{d}^{2}}y}{d{{x}^{2}}}-{{m}^{2}}y=\] [MP PET 1987]

\[{{m}^{2}}(a{{e}^{mx}}-b{{e}^{-mx}})\]

If \[y=a{{e}^{mx}}+b{{e}^{-mx}}\], then \[\frac{{{d}^{2}}y}{d{{x}^{2}}

1.	If \[y=a{{e}^{mx}}+b{{e}^{-mx}}\], then \[\frac{{{d}^{2}}y}{d{{x}^{2}}}-{{m}^{2}}y=\] [MP PET 1987]
A.	\[{{m}^{2}}(a{{e}^{mx}}-b{{e}^{-mx}})\]
B.	1
C.	0
D.	None of these
Answer» D. None of these

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If \[y=a{{e}^{mx}}+b{{e}^{-mx}}\], then \[\frac{{{d}^{2}}y}{d{{x}^{2}}}-{{m}^{2}}y=\] [MP PET 1987]

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