I have been trying this problem for about an hour now and I just can't seem to figure it out:
dA/dt + 2A/(50+t) = 3
I found that the integrating factor = (50+t)^2 and so d/dt (50+t)^2(A) = 3(50+t)^2
but after this my problem falls apart... I can't seem to figure out how to go from there... I tried integrating both sides and factoring but that was not the right answer... Any help would be greatly appreciated! Thank you!