1.

The differential equation formed by eliminating a and b from y = aex + be-x is _______(a) d2y/dx2 - y = 0(b) d2y/dx2 - dy/dx = 0(c) d2y/dx2 = 0(d) d2y/dx2 - x = 0

Answer»

(a) d2y/dx- y = 0

y = aex + be-x; y' = aex - be-x

y" = aex + be-x ⇒ y" - y' = 0



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