Question

Evaluate the definite integral.

Answer 1

go into this site callec web 2.0 calc it type the problem into the calculator and BAM theres the answer! :) or better yet, get out paper and actually write out the problem

Answer 2

and solve it that way

Answer 3

@onegirl do you have any idea?

Answer 4

am i just going to substitute u or?

Answer 5

yes, which one? u =?

Answer 6

try u = x^2 +1 then du =?

Answer 7

is du the derivative of it? or

Answer 8

yes!! try, if you make some mistake, i correct it then, but the most important is trying!!

Answer 9

ok

Answer 10

don't worry, I dare not say anything further, but to this problem, I am ok

Answer 11

okay i'll try it t

Answer 12

okay for the derivative i got 2x

Answer 13

2xdx girl. ok, let put it in neat du = 2x dx , right?

Answer 14

got it?

Answer 15

okay

Answer 16

ok, now, we change the limit, have to. tell me, if x =0, u =?

Answer 17

do you know what I am doing?

Answer 18

hmmm no

Answer 19

ok, let me explain. Originally, you have x, dx and limits respect to x
then, you change (substitute) to u, so, dx must change to du and limits must follow u, right?

Answer 20

yes

Answer 21

so u will be 0 too right?

Answer 22

Me? I live in USA

Answer 23

ok, take step!! forget my question, I thought you don't understand what I mean so, made that question to find out another way for you to come up the problem, now, you got it, no need more . take a look

Answer 24

ok lol my bad