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

Brooke_army Group TitleBest ResponseYou've already chosen the best response.0
ok for this question i think im doing something wrong i got the answer of 17 but this is not right please help
 2 years ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
can you find dy/dx of the given equation?
 2 years ago

Brooke_army Group TitleBest ResponseYou've already chosen the best response.0
dy/dt=3x^2+5
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
when you take the derivative wrt to t you should get a dx/dt term
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
u need to use chain rule d/dt(5x) = 5 d/dx (dx/dt)
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
instead of d/dx x^3 = 3 x^2 dx/dx you do d/dt x^3 = 3 x^2 dx/dt
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
if you think \[ \frac{d}{dx} x= 1\] think this \[ \frac{ d}{dx} x= \frac{dx}{dx}= 1\]
 2 years ago

sunnymony Group TitleBest ResponseYou've already chosen the best response.0
dw:1352559750685:dw
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
using the same logic \[ \frac{d }{dt} x= \frac{dx}{dt} \]
 2 years ago

sunnymony Group TitleBest ResponseYou've already chosen the best response.0
3x2+5 is ans
 2 years ago

Brooke_army Group TitleBest ResponseYou've already chosen the best response.0
thanks so much i got the wright answer!!
 2 years ago

sunnymony Group TitleBest ResponseYou've already chosen the best response.0
dy/dx= 3x2+5 dx/dt = 5 so both multiply we get =15x2+25
 2 years ago

phi Group TitleBest ResponseYou've already chosen the best response.1
then you got dy/dt=3x^2 dx/dt + 5 dx/dt replace x=2, dx/dt=5 to get dy/dt = 3*4*5+ 5*5= 85
 2 years ago

sunnymony Group TitleBest ResponseYou've already chosen the best response.0
so 15( 2x2)+25 =60+25 85
 2 years ago

sunnymony Group TitleBest ResponseYou've already chosen the best response.0
thats right @phi
 2 years 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.