Let p and q be polynomials of degree n with domain R. If there exists c e R such that W [p, q](c) = 0, then p and q are linearly dependent. Suppose the general solution of a linear, second-order ODE is y = domain D, where C1, C2 E R. Then for any x € D, W[y1, y2](x) # 0. C1y1 + C2y2 with Let L denote the Laplace transform and f(t) = sin(t) cos(t) Then L(f) exists.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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just c-e, please!

please thoroughly explain, because current explanations for these answers on this site don't exactly make sense to me.

Label each of the following statements as true or false. If true, prove the statement. If false,
provide a counterexample.
(a) If the characteristic equation of a constant-coefficient, linear, homogeneous ODE has one
non-real root, then it has at least two non-real roots.
(b) Let a, b, c, xo, x1, Yo, Y1 ER and xo # Yo, a # 0. Then the ODE ay" + by' + cy
satisfying y(xo)
= yo and y'(x1)
Yı is guaranteed a unique solution.
(c) Let p and q be polynomials of degree n with domain R. If there exists cER such that
W [p, q](c) = 0, then p and q are linearly dependent.
(d) Suppose the general solution of a linear, second-order ODE is y =
domain D, where C1, C2 E R. Then for any x e D, W[yl, y2](x) # 0.
C141 + C2y2 with
(e) Let L denote the Laplace transform and f (t) =
sin(t)
cos(t)
Then L(f) exists.
Transcribed Image Text:Label each of the following statements as true or false. If true, prove the statement. If false, provide a counterexample. (a) If the characteristic equation of a constant-coefficient, linear, homogeneous ODE has one non-real root, then it has at least two non-real roots. (b) Let a, b, c, xo, x1, Yo, Y1 ER and xo # Yo, a # 0. Then the ODE ay" + by' + cy satisfying y(xo) = yo and y'(x1) Yı is guaranteed a unique solution. (c) Let p and q be polynomials of degree n with domain R. If there exists cER such that W [p, q](c) = 0, then p and q are linearly dependent. (d) Suppose the general solution of a linear, second-order ODE is y = domain D, where C1, C2 E R. Then for any x e D, W[yl, y2](x) # 0. C141 + C2y2 with (e) Let L denote the Laplace transform and f (t) = sin(t) cos(t) Then L(f) exists.
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