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If Delta=|{:(sinx,sin(x+h),sin(x+2h)),(s...

If `Delta=|{:(sinx,sin(x+h),sin(x+2h)),(sin(x+2h),sinx,sin(x+h)),(sin(x+h),sin(x+2h),sinx):}|`
find `lim_(hto0)((Delta)/(h^(2)))`.

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