Question

Help me confirm my answer!

Answer 1

Dragon ball z!!!

Answer 2

Question: \[\int\limits_{}^{}\sqrt{9x ^{2}-1}dx\]

Answer 3

whats ur answer?

Answer 4

Answer: \[(1/6)(\sec \theta \tan \theta+\ln(\sec \theta \tan \theta))-(1/3)(\ln(\sec \theta \tan \theta))\]

Answer 5

to confirm your answer you need to the find the derivative of your answer.if it matches the question, you're right

Answer 6

I don't have to convert back to x so taking the derivative will not suffice

Answer 7

Then, someone will have to check your work

Answer 8

take the derivative of that then convert it back to x i suppose. i honestly cant read it so i cant check it

Answer 9

did you change this to polar coordinates?

Answer 10

No

Answer 11

i think he did trig subs

Answer 12

Yea

Answer 13

Using a right triangle I did trig. Subs.

Answer 14

gotcha.

Answer 15

And then it turns into like a double integral where you have to do it by parts and all this other garbage.

Answer 16

Really not worth typing cause it will probably be too long for others to take the time to work out lol

Answer 17

Not easy doing with polar coordinate either, just gotta stick with trig sub