im given the equation:(adsbygoogle = window.adsbygoogle || []).push({});

k d[tex]^{2}[/tex]T/dx[tex]^{2}[/tex] = 0 over 0 < x < L = 0.4

with T(0)=T and -k dT(L)/dx = h(T(L)-Tinf)

i tried to solve it and i got

T(x) = (-h(T(L)-Tinf)x)*(1/k)

the book gives

T(x) = ( (k+h(L-x))T+h*x*Tinf)*(1/ (k+h*L) )

i dont understand what went wrong... help!

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Thermo diff. eqn problem

**Physics Forums | Science Articles, Homework Help, Discussion**