1.

The respective expressions for complementary function and particular integral part of the solution of the differential equation \(\frac{{{d^4}y}}{{d{x^4}}} + 3\frac{{{d^2}y}}{{d{x^2}}} = 108{x^2}\) are

A. c1 + c2x + c3 sin√3x + c4cos√3x and 3x4 - 12x2 + c
B. c2x + c3 sin√3x + c4cos√3x and 5x4 - 12x2 + c
C. c1 + c3 sin√3x + c4cos√3x and 3x4 - 12x2 + c
D. c1 + c2x + c3 sin√3x + c4cos√3x and 5x4 - 12x2 + c
Answer» B. c2x + c3 sin√3x + c4cos√3x and 5x4 - 12x2 + c


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