find differential equations for y=Acosx-Bsinx
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Answer:
d²y/dx² + y = 0
Step-by-step explanation:
y=Acosx-Bsinx
dy/dx= -Asinx-Bcosx
d²y/dx²= -Acosx+Bsinx= -[Acosx-Bsinx]= -y
then d²y/dx² + y = 0
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