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

1. lgbasallote

i dont think i want this im changing the question lol

2. Shayaan_Mustafa

Hi lgbasallote :) How are you?

3. Shayaan_Mustafa

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

4. lgbasallote

there i think that's better

5. lgbasallote

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

6. Ishaan94

Use binomial and expand it, if you can

7. lgbasallote

wont integration by parts work?

8. Shayaan_Mustafa

It is integrable dear.

9. Ishaan94

And this is totally Integrable.

10. mathslover

@vishweshshrimali5 may help u

11. Shayaan_Mustafa

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

12. Shayaan_Mustafa

I agree with Ishaan94

13. lgbasallote

what easier way? expansion?

14. Shayaan_Mustafa

yes. Expand.

15. lgbasallote

hmmm...

16. lgbasallote

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

17. lgbasallote

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

18. vishweshshrimali5

yes this is integrable

19. Ishaan94

By Parts, perhaps

20. waterineyes

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

21. lgbasallote

lol wow

22. lgbasallote

i dont wanna attempt it o.O

23. vishweshshrimali5

My answer is for ur original question

24. lgbasallote

:yeah i know haha

25. vishweshshrimali5

@lgbasallote Very true

26. Shayaan_Mustafa

I think it is not integrable dear.

27. Shayaan_Mustafa

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. Ishaan94

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. Shayaan_Mustafa

So this is not integrable. Right?

32. experimentX

perhaps not

33. Shayaan_Mustafa

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.