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13 pt) 12) Suppose k and I are real numbers and let u(x, t) = sin(kx)e-'t....

Question:

13 pt) 12) Suppose k and I are real numbers and let u(x, t) = sin(kx)e-t. For which k and I is AL art Mail rathe imp Follo M
13 pt) 12) Suppose k and I are real numbers and let u(x, t) = sin(kx)e-'t. For which k and I is AL art Mail rathe imp Follo Misc Prior au duo. əxlar" 0.

Answers

eiker kt U (x, t) = sih (lxlekt x = l cos (lx) e-kt x = -1² sih (lx) e R- - k²t ut = sth(lx) e (-8²) 200 Lų + U = 0 - k²t. è

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