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12-15SHIFTED DATA PROBLEMS 12. у" - 2у - 3у =0, y(4) =-3 -3,У(4)-17 13. у - 6y= 0 y(-1)=4 14. y" + 2y' +5y = 50t - 100, y(2) =

-4.y (2) = 14 15. y" + 3y – 4y = 6e-2t -3 y (1.5) = 4, y(1.5) = 5

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