1. The problem statement, all variables and given/known data First z(t) + (-tz + 3t)dt=0 Second: in attachment 2. Relevant equations How can one solve hose integrations I was faced as one part in solving Dif. equation. 3. The attempt at a solution I have tried to soleve bouth of them by usin substitution rule but I have failed do gain the right answers. I must have been making some silly and repeating error.