## anonymous 3 years ago LGBAINTEGRAL: $\huge \int (2x^3+5)^4 dx$ is this integrable??

1. anonymous

i dont think i want this im changing the question lol

2. anonymous

Hi lgbasallote :) How are you?

3. anonymous

Do you know which function is integrable or which is not? Do you know?

4. anonymous

there i think that's better

5. anonymous

i dont think that last one could be solveable by simple techniques

6. anonymous

Use binomial and expand it, if you can

7. anonymous

wont integration by parts work?

8. anonymous

It is integrable dear.

9. anonymous

And this is totally Integrable.

10. mathslover

@vishweshshrimali5 may help u

11. anonymous

Don't use by parts. Choose an easy way.

12. anonymous

I agree with Ishaan94

13. anonymous

what easier way? expansion?

14. anonymous

yes. Expand.

15. anonymous

hmmm...

16. anonymous

yeah i guess if it's just expansion then i can do the rest from there

17. anonymous

and seriously... $\int \frac{x}{2+\tan x}dx$ that's integrable??? hahaha

18. vishweshshrimali5

yes this is integrable

19. anonymous

By Parts, perhaps

20. anonymous

If there would be 1 in the numerator then it can be integrated bu there is x.. Ha ha ha..

21. anonymous

lol wow

22. anonymous

i dont wanna attempt it o.O

23. vishweshshrimali5

My answer is for ur original question

24. anonymous

:yeah i know haha

25. vishweshshrimali5

@lgbasallote Very true

26. anonymous

I think it is not integrable dear.

27. anonymous

This function is not integrable.

28. vishweshshrimali5

for ur next question I don't have any idea for this but this is what wolfram says

29. anonymous

I just lost my work. I can only think of by parts. I haven't tried any calculator, so I don't know if its integral is defined.

30. vishweshshrimali5

but wait for Ishaan sir may be he would have a better way to solve

31. anonymous

So this is not integrable. Right?

32. experimentX

perhaps not

33. anonymous

Not perhaps. It is ofcourse not.

34. vishweshshrimali5

yes it is not integrable

35. experimentX

$\int \sin x /x dx$ is not integrable ... somehow this integration seems same type.