2∂∂∂∂XXTT∂ (0, T) = 0 ∂ + XCOSX UT=0 = SINX, ∂ T=0 = COSX, ∂ = A...

15. - BAI TAP CHO 16 UNIT 12 CO DAP AN
BAI TAP CHO 16 UNIT 12 CO DAP AN
15.

2

∂xt∂ (0, t) = 0 ∂ + xcosx u

t=0

= sinx, ∂

t=0

= cosx, ∂ = a

2

2

2

u