Question 1184506

(A)  The integrating factor is {{{e^(6*int(dt/(250-t))) }}}= {{{e^(-6*ln(250-t)) = (250-t)^(-6)}}}


(B)   The solution is {{{A(t) = 11(250 - t) - 1.122x10^(-11)*(250-t)^6}}}