Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Closed

mathsmindBest ResponseYou've already chosen the best response.0
i have been trying to enter the site since yesterday did you all have the same problem?
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
anyways there are many ways to solve this problem, one of them would be Taylor series the other one would be substitution method
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
@mathsmind yea ive been having problems with it to so i did the problems i know how to do until it finally works
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
@mathsmind i figured that one out im stuck on another one now
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
evaluate the intergal dw:1361284859202:dw
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
@mathsmind that one ^^^
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
sorry i meant i was having problems entering the website since yesterday
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
i know how to solve both integral in my head
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
@mathsmind how long are you going to be one today ?
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
it depends on my work, if i am busy or not
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
can you answer my question please?
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
were you able to log on to the site
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
@mathsmind which one ? lol
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
oh no i wasnt i answered it above
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
this website? openstudy
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
i felt like crying lol, with out this website i don't know what id do
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
ok let me reply to the last integral
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
the answer for the last integral would be pi/6
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
now by looking at the last integral you can find out from the table that it is equal to arcsin(x/2)
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[\int\limits_{0}^{1}\frac{ dx }{ \sqrt{4x^2} }\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
is that the integral or not?
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
ok there are two ways to do that
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
one way is to look at the arctrigs integrals
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
you know the table of integrals right!
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
the other way is to go through full substitution method
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
lol no but ill look them up
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
ok do you want detailed solution then
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
can you differentiate the last bit?
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[\int\limits_{0}^{1}\frac{ 2du }{\sqrt{44u^2} }\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[\int\limits\limits_{0}^{1}\frac{ du }{\sqrt{1u^2} }\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
thanks that was kind of you, and you are a bright student
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
let me give you a third way how to do that
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
i understand the usub the most
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
i have three more integral questions
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
you need to know different methods to solve one problem , that for future note...
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
altho the differentiate part is a bit hard
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
i have a phone call but still submit your work
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
but ill look back it later because i have to get this course done to graduate
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
no i meant you make y =2sinx sub
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
different substitution
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
if you look at the unit triangle you can figure out that you need a sin sub
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
find the intergal dw:1361286908472:dw
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
again you are going to get an arctan but now we need to look at the factors
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
just by looking at this integral we will get 4/3arctan(3x) +c
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
the question is what was x=? in this u sub
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
you need to assume that 3x=u, 9x^2=u^2, 3dx=du
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[\int\limits \frac{ 4du }{ 3(1+u^2) }=\frac{ 4 }{ 3}\arctan(u)+c\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[u=3x, \therefore \frac{ 4 }{ 3 }\arctan(3x)+c\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
that's your final answer
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
okay i just did the other one so i have one more integral question
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
again you can see we will get the arctan + something
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
your answer should be\[\frac{ 1 }{ 2 }\arctan(\frac{ 1 }{ 2}(x1))+c\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[\int\limits\limits\limits \frac{ dx }{4+(1x)^2}\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
now 2u=1x, 4u^2=(1x)^2,
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
now one thing you need to know is how to let the 4 be a one in the denominator
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
ok let me show, it is clear from the usub
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
remember that 2u =1x, 2du=dx
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
okay so far so good lol
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[\int\limits\frac{ 2du }{4(1+(u)^2)}\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
can you see it better this way?
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[\frac{ 1 }{ 2 }\arctan(u)+c\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[2u=1x, \space u=\frac{ 1 }{ 2 }(1x)\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
\[\frac{ 1 }{ 2 }\arctan(\frac{ 1 }{ 2 }(1x))+c\]
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
that's your final answer
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
okay thanks ! im working on some ill let you know if i need more help
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
you don't sound like you got the last one?
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
lol i havent fully looked at it yet im finishing a problem
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
so i read your mind well hehehe
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
lol yeahh i was wondering how you knew that,but im looking at it now
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
i still don't understand how the engagement scheme works on open study
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
i think its by the questions you answer, and medals you receive
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
no i am not asking about those two, i am asking about the engagement part
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
the one that has learner next to it
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
lol i thinks its from asking questions cause thats how you learn right
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
okay i found two i need help on
 one year ago

EphiloBest ResponseYou've already chosen the best response.0
determine which of the integrals can be found using the basic integration formulas you have studied so far in the text.
 one year ago

mathsmindBest ResponseYou've already chosen the best response.0
i think you need to open a new thread because this one is getting heavy with BW
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.