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Evaluate the definite integral.

Mathematics
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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
and solve it that way

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Other answers:

@onegirl do you have any idea?
am i just going to substitute u or?
yes, which one? u =?
try u = x^2 +1 then du =?
is du the derivative of it? or
yes!! try, if you make some mistake, i correct it then, but the most important is trying!!
ok
don't worry, I dare not say anything further, but to this problem, I am ok
okay i'll try it t
okay for the derivative i got 2x
2xdx girl. ok, let put it in neat du = 2x dx , right?
got it?
okay
ok, now, we change the limit, have to. tell me, if x =0, u =?
do you know what I am doing?
hmmm no
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?
yes
so u will be 0 too right?
Me? I live in USA
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
ok lol my bad
|dw:1368223122327:dw|
calculate it and tell me the answer
|dw:1368223207231:dw|
umm 5?
perfect! now replace
|dw:1368223296128:dw|
ok
you go girl!!! can step up from here?
so now i find the integral or?
am I rude when saying that? sorry if you feel so, or I take it back?
noo is that a sqrt sign?
yep, from the beginning until now, we don't "substitute " that sqrt, so it's there still
okay
so, what's the answer?
so i got (2 u^(3/2))/3+C
something wrong there, 1st you forgot 1/2 from du, and it cancel out with your 2/3 to get 1/3 only 2nd, it has a limits so, you have to replace those limit where you have u.
|dw:1368223960531:dw|
|dw:1368224029766:dw| that's the final one
ohhh okay
glad to hear that.
thanks!
yw

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