# 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 Misc Prior au duo. əxlar" 0.

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