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[dx^(2)quad (y-0)],[" EXAMPLE 27If "y^(2...

[dx^(2)quad (y-0)],[" EXAMPLE 27If "y^(2)=a^(2)cos^(2)x+b^(2)sin^(2)x," then prove that "(d^(2)y)/(dx^(2))+y=(a^(2)b^(2))/(y^(3))]

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