1.

Form the defferentialequation by eliminating the arbitrary constants in each of the following cases. y = a cos x + b sin x

Answer»

SOLUTION :y=a COS X+bsin x
dy/dx=-a SIN x+b cos x
`(d^2y)/dx^2=-acosx-b sinx=-y`
`RARR(d^2y)/dx^2+y=0`


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