roselin
evaluate indefinite integrals
intergral tan^2x Sec^2x dx



This Question is Closed

cinar
Best Response
You've already chosen the best response.
3
tanx=u

cinar
Best Response
You've already chosen the best response.
3
take the derivative

roselin
Best Response
You've already chosen the best response.
0
derivative of tanx?

cinar
Best Response
You've already chosen the best response.
3
both sides

cinar
Best Response
You've already chosen the best response.
3
what is it

roselin
Best Response
You've already chosen the best response.
0
derivative of tna is sec^2x

cinar
Best Response
You've already chosen the best response.
3
sec^2xdx=du

cinar
Best Response
You've already chosen the best response.
3
subs. them in int.

cinar
Best Response
You've already chosen the best response.
3
if tanx=u then what is tan^2x

roselin
Best Response
You've already chosen the best response.
0
u sqre

cinar
Best Response
You've already chosen the best response.
3
good

cinar
Best Response
You've already chosen the best response.
3
then what is your new int. depends on only u

cinar
Best Response
You've already chosen the best response.
3
int. tan^2x Sec^2x dx
sec^2xdx=du
tan^2x=u^2

roselin
Best Response
You've already chosen the best response.
0
csc x^3/ 3 ?

cinar
Best Response
You've already chosen the best response.
3
dw:1355646302656:dw

cinar
Best Response
You've already chosen the best response.
3
what are they in u

roselin
Best Response
You've already chosen the best response.
0
u^2 . du

cinar
Best Response
You've already chosen the best response.
3
yesssssss..

cinar
Best Response
You've already chosen the best response.
3
solve that integral..

roselin
Best Response
You've already chosen the best response.
0
1/3 tan^3 x+c ?

cinar
Best Response
You've already chosen the best response.
3
you got it..

roselin
Best Response
You've already chosen the best response.
0
but i have one question though

cinar
Best Response
You've already chosen the best response.
3
shoot it..

roselin
Best Response
You've already chosen the best response.
0
dw:1355639354738:dw

cinar
Best Response
You've already chosen the best response.
3
dw:1355646949637:dw

roselin
Best Response
You've already chosen the best response.
0
did not get it,s orry

cinar
Best Response
You've already chosen the best response.
3
they are the same thing but just different letter..

cinar
Best Response
You've already chosen the best response.
3
dw:1355647192985:dw

roselin
Best Response
You've already chosen the best response.
0
oh okay.

cinar
Best Response
You've already chosen the best response.
3
dx or du they are just saying that you are taking int. depends on that variable

cinar
Best Response
You've already chosen the best response.
3
dw:1355647315134:dw

cinar
Best Response
You've already chosen the best response.
3
you can assume that x is just a constant in here..

roselin
Best Response
You've already chosen the best response.
0
okay,thanks. i have another problem, will you help me with that?

cinar
Best Response
You've already chosen the best response.
3
ok..

roselin
Best Response
You've already chosen the best response.
0
thanks

roselin
Best Response
You've already chosen the best response.
0
dw:1355640103615:dw

cinar
Best Response
You've already chosen the best response.
3
dw:1355647649309:dw

cinar
Best Response
You've already chosen the best response.
3
take derivative

roselin
Best Response
You've already chosen the best response.
0
how do you decide which one is "U"?

cinar
Best Response
You've already chosen the best response.
3
(:

cinar
Best Response
You've already chosen the best response.
3
because I can see that derivative sinx =cosxdx and it is above

cinar
Best Response
You've already chosen the best response.
3
dw:1355647787810:dw

roselin
Best Response
You've already chosen the best response.
0
derivative of sin theta = cos theta d theta

cinar
Best Response
You've already chosen the best response.
3
but it is sinsqrt theta

roselin
Best Response
You've already chosen the best response.
0
cos sqrt theta d theta

cinar
Best Response
You've already chosen the best response.
3
dw:1355647993776:dw

cinar
Best Response
You've already chosen the best response.
3
one more thing youre missing

roselin
Best Response
You've already chosen the best response.
0
what is it?

cinar
Best Response
You've already chosen the best response.
3
derivative of sqrt theta

roselin
Best Response
You've already chosen the best response.
0
dw:1355640793032:dw

cinar
Best Response
You've already chosen the best response.
3
dw:1355648238516:dw

cinar
Best Response
You've already chosen the best response.
3
dw:1355648283456:dw

roselin
Best Response
You've already chosen the best response.
0
how did you get that half?

cinar
Best Response
You've already chosen the best response.
3
dw:1355648328997:dw

cinar
Best Response
You've already chosen the best response.
3
dw:1355648354029:dw

cinar
Best Response
You've already chosen the best response.
3
dw:1355648407558:dw

cinar
Best Response
You've already chosen the best response.
3
what is your new integral..

cinar
Best Response
You've already chosen the best response.
3
dw:1355648571843:dw

roselin
Best Response
You've already chosen the best response.
0
1/2 integral 1/sin sqrt theta +c?

cinar
Best Response
You've already chosen the best response.
3
dw:1355648717143:dw

cinar
Best Response
You've already chosen the best response.
3
dw:1355648783325:dw

roselin
Best Response
You've already chosen the best response.
0
confused

cinar
Best Response
You've already chosen the best response.
3
what is int. 1/x dx=?

roselin
Best Response
You've already chosen the best response.
0
d

roselin
Best Response
You've already chosen the best response.
0
x

cinar
Best Response
You've already chosen the best response.
3
dw:1355648969297:dw

roselin
Best Response
You've already chosen the best response.
0
okay

cinar
Best Response
You've already chosen the best response.
3
in your case lnu+c
put u back in

cinar
Best Response
You've already chosen the best response.
3
I gotta go, any question..

roselin
Best Response
You've already chosen the best response.
0
so,thats the ans ? after putting the u?

cinar
Best Response
You've already chosen the best response.
3
yes, ln(sin sqrt theta)+c is the answer..

roselin
Best Response
You've already chosen the best response.
0
okay,thanks a lot

cinar
Best Response
You've already chosen the best response.
3
np..