Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
razroz
Group Title
Evaluate the line integral f(x,y)ds along the parametric curve: f(x,y)=3x+4y^2;x=2t1, y=t+5, 1(<or=) t (<or=) 2
 one year ago
 one year ago
razroz Group Title
Evaluate the line integral f(x,y)ds along the parametric curve: f(x,y)=3x+4y^2;x=2t1, y=t+5, 1(<or=) t (<or=) 2
 one year ago
 one year ago

This Question is Closed

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
\[ds =\sqrt{(x')^2+(y')^2}\]
 one year ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
well, in this case i spose fx and fy for partials
 one year ago

razroz Group TitleBest ResponseYou've already chosen the best response.0
so i take the partial of both x and y with respect to t and plus that under a square root next to the function f(x,y) and integrate?
 one year ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
yes, but dont forget to replace x and y with their t equations within f f(x,y)=3x+4y^2;x=2t1, y=t+5 f(t)=3(2t1)+4(t+5)^2
 one year ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
or am i mixing things up?
 one year ago

Algebraic! Group TitleBest ResponseYou've already chosen the best response.1
ds = v(t) dt
 one year ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
im mixing a vector feild in with this i believe
 one year ago

razroz Group TitleBest ResponseYou've already chosen the best response.0
no i believe you are right, let me write it out real quick
 one year ago

Algebraic! Group TitleBest ResponseYou've already chosen the best response.1
you're fine @amistre64
 one year ago

razroz Group TitleBest ResponseYou've already chosen the best response.0
so i would just get a sqrt(5) from the ds, then the function would read integral of (3(2t1)+4(t+5)^2)dt (times the sqrt(5))?
 one year ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
..... thnx ;)
 one year ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
yep, but put the sqrt5 inside the integral
 one year ago

Algebraic! Group TitleBest ResponseYou've already chosen the best response.1
yes correct, @razroz
 one year ago

razroz Group TitleBest ResponseYou've already chosen the best response.0
thank you so much
 one year ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
good luck ;)
 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.