# Thread: Help with a calculus problem :D

1. ## Help with a calculus problem :D

y = ln[(e^−x) + (xe^−x)] <--- find y prime

Yurp that's it. Will +rep if the answer is correct (I can check it since the HW is online, it will tell me whether or not I get it right, I have 5 tries).

Appreciate it ^.^

2. y'={-x}/{1+x} MATH IS EXTREMELY RUSTY!! But since you have 5 tries, try that lol.

3. ## The Following User Says Thank You to mistry121 For This Useful Post:

Kittie (10-20-2012)

4. Yayy that was right ^.^ Thanks much, +rep

5. ## The Following User Says Thank You to Kittie For This Useful Post:

mistry121 (10-20-2012)

6. Mistry beat me to it, but if you need any explanation/more help I am happy to ^_^!

7. damn glad i never took calculus xD and do you use blackboard? jw cause on my online assignments i get 5 tries too xD

8. You can also try inputting problems like this into http://wolframalpha.com. Your problem, for instance, could be put in as d/dx ln[(e^−x) + (x*e^−x)] (same as finding y'). It'll show you step-by-step solutions.

9. ## The Following User Says Thank You to derpherpherp For This Useful Post:

I_royalty_I (10-21-2012)

10. Originally Posted by kooldude888
damn glad i never took calculus xD and do you use blackboard? jw cause on my online assignments i get 5 tries too xD
I thought calculus was a must in all schools.

11. Originally Posted by derpherpherp
You can also try inputting problems like this into http://wolframalpha.com. Your problem, for instance, could be put in as d/dx ln[(e^−x) + (x*e^−x)] (same as finding y'). It'll show you step-by-step solutions.
That is amazing!
I could have used that when I took calculus!
I feel for anybody in calc and beyond. I had to take a few classes after calc since I took ap calc bc in high school. So done with math LOL

12. Originally Posted by Kenji
I thought calculus was a must in all schools.
it wasnt in mine mine we just had to have 3 years of math

13. Originally Posted by kooldude888
it wasnt in mine mine we just had to have 3 years of math
Good for you, math isn't mine too! xD

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