In Problems 11-14, y = ciet + c₂e" is a two-parameter family of solutions of the second-order DE y" - y = 0. Find a solution of the second-order IVP consisting of this differ- ential equation and the given initial conditions. 11. y(0) = 1, 12. y(1) = 0, 13. y(−1) = 5, y'(−1) = −5 14. y(0) = 0, y'(0) = 0 y'(0) = 2 y'(1) = e

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