Few hard integrations in Dif.equation solution

[tiam77]

Homework Statement

First

z(t) + (-tz + 3t)dt=0

Second:

in attachment

Homework Equations

How can one solve hose integrations I was faced as one part in solving Dif. equation.

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.

 

[Gib Z]

Hello tiam77, welcome to Physicsforums!

Forum policy is for the helpers to not give help if you do not show us any work - Saying you tried something is good, show us what exactly you did. We can't help you if we can't see where you are going wrong?

For the first one, is z a function or a constant?

For the second one, the substitution seems fairly obvious. What did you try to use? Show us what you did!