A community for students.
Here's the question you clicked on:
 0 viewing
Dido525
 3 years ago
Evaluate the intergral:
Dido525
 3 years ago
Evaluate the intergral:

This Question is Closed

Dido525
 3 years ago
Best ResponseYou've already chosen the best response.0I thought I could use substitution but I can't ...

winterfez
 3 years ago
Best ResponseYou've already chosen the best response.0is this right? \[\int\limits_{0}^{4}\frac{ x }{ \sqrt{1+2x} }\]

Mimi_x3
 3 years ago
Best ResponseYou've already chosen the best response.4\( u = 1+ 2x => du/dx = 2\) \( 1+2x = u => 2x = u1 => x = (u1)/2 \)

Dido525
 3 years ago
Best ResponseYou've already chosen the best response.0I got to that step. Then I got stuck :P .

Mimi_x3
 3 years ago
Best ResponseYou've already chosen the best response.4Maybe:\[\int\limits\frac{x}{\sqrt{1+2x}} dx => \int\limits \frac{(u1)/2}{\sqrt{u}} *2du \int\limits\frac{u1}{2} *\frac{1}{\sqrt{u}} 2du => 2\int\limits\frac{u1}{2} *\frac{1}{\sqrt{u}} \]

eliassaab
 3 years ago
Best ResponseYou've already chosen the best response.1Here what wolfram alpha gave

Mimi_x3
 3 years ago
Best ResponseYou've already chosen the best response.4Would my step work tho?

zepdrix
 3 years ago
Best ResponseYou've already chosen the best response.1@Dido525 do you understand what mimi did? those are the correct steps to take.

Dido525
 3 years ago
Best ResponseYou've already chosen the best response.0Yeah I actually do. I just need to process it.

Dido525
 3 years ago
Best ResponseYou've already chosen the best response.0@Mimi_x3 : Wouldn't you write du/2 instead of 2*du ?

Dido525
 3 years ago
Best ResponseYou've already chosen the best response.0Because we said du/2 was dx.

Mimi_x3
 3 years ago
Best ResponseYou've already chosen the best response.4Yeah typo lol sorry! that was where i went wrong :(

Dido525
 3 years ago
Best ResponseYou've already chosen the best response.0So so far I have: \[\frac{ 1 }{ 4 }\int\limits_{1}^{9} \frac{ u1 }{ \sqrt{u} } du\]

Mimi_x3
 3 years ago
Best ResponseYou've already chosen the best response.4integrate it; then don't forget to sub back in \(u\)
Ask your own question
Sign UpFind more explanations on OpenStudy
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.