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complementary function

GATE Civil Engineering · Differential Equations (CE) · 1996-1998

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B. S. Grewal — Higher Engineering Mathematics

Linear algebra, calculus, probability, numerical methods

Solve $${{{d^4}y} \over {d{x^4}}} - y = 15\,\cos \,\,2x$$

Solve $${{{d^4}v} \over {d{x^4}}} + 4{\lambda ^4}v = 1 + x + {x^2}$$