# Thread: help antiderive these Riemann integrals

1. ## help antiderive these Riemann integrals

Show manual steps to evaluate these integrals:

1. antiderive: 1-x/x^2-2x dx u=X^2-2x

2. antiderive(1 at bottom 9 on top): 2/(sqroot X)(1+sqrootx) dx u=1+sqrootX

3. antiderive(1 at bottom, 5 is upper number): 2x-1/x+2 dx u=x+2

2. Originally Posted by Stuck686
Show manual steps to evaluate these integrals:

1. antiderive: 1-x/x^2-2x dx u=X^2-2x
Here, tell me if you don't get something

3. Originally Posted by Stuck686

2. antiderive(1 at bottom 9 on top): 2/(sqroot X)(1+sqrootx) dx u=1+sqrootX
Here

4. Originally Posted by Stuck686

3. antiderive(1 at bottom, 5 is upper number): 2x-1/x+2 dx u=x+2
Here

5. Here. I made a mistake on the third one, I caught it when I tried to do it by another method. Make the necessary corrections

6. wow thanks. Are you a math teacher?

7. Originally Posted by Stuck686
wow thanks. Are you a math teacher?
Hahaha, wow!

No i am not, far from it!

I guess i should take that as a compliment though.

So i take it you understood everything i did. i did not do much explaining

8. well i did not compare it to mine yet or really look at it. today is kind of a rest day