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Walleye Group TitleBest ResponseYou've already chosen the best response.1
/barf im guessing u sub will help you here
 3 years ago

across Group TitleBest ResponseYou've already chosen the best response.1
Integration by parts!
 3 years ago

across Group TitleBest ResponseYou've already chosen the best response.1
Whoops, I misread.
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
yes integration by parts
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
(sec^2x)(sec^2)(sec x)
 3 years ago

across Group TitleBest ResponseYou've already chosen the best response.1
I read it as sec^5(x)x for a moment there. Hmm, in this case, you have to use a reduction formula.
 3 years ago

Walleye Group TitleBest ResponseYou've already chosen the best response.1
red formula will work if you have it
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
well i havent learned taht so is tehre anoterh way to do it by parts
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
sec^2x = 1 + tan ^2
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
( 1 + tan ^2 x ) ( 1 + tan^2 x ) (sec x )
 3 years ago

across Group TitleBest ResponseYou've already chosen the best response.1
I had to look it up\[\frac{\sin(x)\sec^{m1}(x)}{m1}+\frac{m+2}{m1}\int\sec^{m2}(x)dx\]
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
this is wat i have so far: \[\int\limits_{}^{}\sec^3 x (\sec^2 dx)\] \[\int\limits_{}^{}\sec^3 x (1+\tan^2 x dx)\] \[\int\limits_{}^{}(\sec^3 x +\sec^3 x \tan^2 x )dx\]
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
derive tan x = sec^2x
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
so do a u sub with u = tan x , du = sec^2 x dx
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
\[\int\limits_{}^{}(\sec^3 x) + \int\limits_{}^{}(\sec^3 x \tan^2 x) dx\] can i use u sub after this step
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
you will prolly end up with a ( 1 + u ) ^(to some power ) then it a simple integration
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
can u show me the steps after the one i just did
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
or wat to do?
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
im a little rusty
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
ughh i hate problems liek this!! XD...requires too much work
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
yea, it may have to be broken up into parts I cant get rid of one of the sec^x check out: http://www.wolframalpha.com/input/?i=integrate+sec^5+x
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
this IS a reduction formula for powers of sec.
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
i did n idont understand it b.c it uses smthng i didnt leard which is teh reduction formula thing
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
then again do u mind tellin me wat that is
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
or how to use it
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
yea, your instructor may not accept a reduction formula answer, it the quick way, but there is a trigonometric solution for this.
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
cool i will prob understand that if u explain
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
the trig solution i mean
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
there is an identity that will lead to an integral of u. anywa here is a like with the reduction formula for secant, and others http://www.sosmath.com/calculus/integration/moretrigpower/moretrigpower.html
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
as a matter of fact I bet your textbook has a table of integrals for integrals of powers of secant
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
what is the dffnce between sex^n (x) and sec^n (ax)
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
i wud use the first formula right? sec^5 (x) = sec ^52 (x) sec^2(x) = sec^3 (tan^2 x * sec^2 x 1)
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
where do u go on from there
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
omg i havent done definite integrals!
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
no, I mistyped
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
∫sec^5dx=1/4sec^3xtanx+3/4∫sec^3xdx
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
no definite integrals here
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
hmm how did u get 1/4 sec ...etc
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
then apply the reduction formula ( or integrate ) \[\int\limits \sec ^ 3 x dx\]
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
im confused how u got the previous step thou
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
its from the reduction formula, it ends with an integral of ∫sec^3xdx
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
i mean teh 1/4 sec part im confused about
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
in the reduction formula it 1/(a(n1) n=5, the power of secant a = 1
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
ok so now how did u get 3/4?
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
from the reduction formula: (n2)/(n1) again n = 5, the power of the secant
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
you instructor will be either impressed or put off that you are using the integral tables. :)
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
lol...he will b impressed hopefully...i have a test 2mm n im trying to udnerstand probs idk
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
yea the trigonometric integrals take practice( obviously )
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
srry this is new to me so after taht step wat do u do..u still have a integral of sec^3 dx to deal with
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
right! so integrate the sec^x or use the formula again, but this time with n = 3, see?
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
sec^x is short, but it indefinite integral has many parts.
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
so after using n=3 do u get 1/2 sec x dx
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
right ( n2)/(n1) this time the formula will end with \[\int\limits \sec x dx\]
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
wait but isnt is half secant
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
so how is teh integral jsut sec
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
no the formula will end ith ∫secxdx, integrate that and you are done.
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
\[\int\limits \sec x dx = \ln ( \sec x +tanx ) + C\]
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
so teh final answer is: 1/4 sec^3 x tanx + 3/4 ...idk teh rest
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
1/4 sec^3 x tanx + 3/4∫sec^3xdx then apply the formula again for ∫sec^3xdx that answer will end with ∫sec xdx integrate ∫secxdx, done!
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
so the final asnwer is: 1/4 sec^3 x tanx + 3/8 sec x tanx + tn (secx+tanx) + C
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
SRY TAHTS SUPPOOSED TO be ln not tn
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
right, distribute the 3/4, I didnt work it all out but it looks right. Those tables are in you textbook right, in the appendix?
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
let me check now
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
"table of integrals"
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
under wat heading shud i looj for te hreduction formulas
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
i see basic forms, forms invlving sqrt of (a^2+u^2, forms involving (a^2  u^2), forms involvung sqrt of (u^2  a^2), forms involving a+bu, trig forms, inverse trig forms, exp and log forms, hyperbolic forms
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
Tables of integrals, Lists of Integrals usually in the appendix, could be on the inside covers.
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
yeah i see them in the appenxix...jsut under wat heading of integrals will i fimd teh reduction formulas
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
or wher u jsut letting me know taht tehre was a table of integrtals
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
that really what we were using, an integration formula, so you can integrate by parts or look up the formula.
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
there might be one for ∫sec^n (ax)dx
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
might not http://integraltable.com/
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
ths is wat is in my bk...sec^n du = 1/n tan u sec^n2 + (n2/n1) *integral of sec^n2 u du
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
i guess tahts anoterh form of te one u showed me
 3 years ago

Roachie Group TitleBest ResponseYou've already chosen the best response.1
right that one dont account for a coefficient on x. so, yea, you seem to have it. Im out. ( gotta brush up on my integrals ;) )
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
THANK U SOOOOO MUCH!!! PLUS THE WEBSITE LOOKS SUPER HELPFUL =)
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
ii imma go study sum more
 3 years ago

help_with_math Group TitleBest ResponseYou've already chosen the best response.0
gnite
 3 years ago
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