Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
bob
In which direction does an action potential travel?
Does it travel from the dendrite through the axon? Or is it dependent on if it is a sensory or motor neuron?
What is the difference in the way action potentials travel through sensory and motor neurons?
2 AnswersBiology7 years agoWHy does MC have to be strictly upward sloping at Q for Q to be profit maximizing?
Please explain in detail
thanks!
1 AnswerEconomics8 years agoI need help with implicit differentiation using Partial derivatives!?
Use this equation to find
dy/dx.
8 tan^−1(x^2y) = x + xy^2
I got :
- ((16xy(1/1+x^2y)-1-y^2) / (8x^2(1/1+x^2y)-2xy)
Am i right? Please explain using Partial Derivatives Only
1 AnswerMathematics8 years agoI need help with partial derivatives!?
Use the Chain Rule to find the indicated partial derivatives.
N = (p + q)/(p+r)
p = u + vw, q = v + uw, r = w + uv;
∂N/∂u
, ∂N/∂v
, and ∂N/∂w
when u = 2, v = 8, w = 5
please explain
thanks!
1 AnswerMathematics8 years agoI need help with implicit differentiation using Partial derivatives!?
Use this equation to find
dy/dx.
8 tan^−1(x^2y) = x + xy^2
I got :
- ((16xy(1/1+x^2y)-1-y^2) / (8x^2(1/1+x^2y)-2xy)
Am i right? Please explain using partial derivatives
2 AnswersMathematics8 years agoI need help with implicit differentiation!?
Use this equation to find
dy/dx.
8 tan^−1(x^2y) = x + xy^2
I got :
- ((16xy(1/1+x^2y)-1-y^2) / (8x^2(1/1+x^2y)-2xy)
Am i right? Please explain
1 AnswerMathematics8 years agoEquation of a tangent plane?
can u tell me if im right? Here's the question:
A student was asked to find the equation of the tangent plane to the surface z=x^3-y^2 at the point (x,y)=(1,2). The student's answer was
z=3x^2(x-1)-2y(y-2)-1
a.) at a glance, how do u know this is wrong?
b.) what mistake did the student make?
c.) answer this question correctly
here's my answer:
it is wrong because the equation is not an equation of a plane (x is cubed and y is squared). The student's mistake was that he did not evaluate the partial derivative at the point (1,2). Also, z0 is not correct (1-2^2=3)
The equation is z=3(x-1)-4(y-2)-3
Am I right?
please explain
thanks
1 AnswerHomework Help8 years agoI really Need HELP with Partial derivatives?
If g(x,y,z)= (sqrt(1+xz))+ (sqrt(1-xy)), find g (subscript xyz). [Hint: use a different order of differentiation for each term]
please explain how i find the partial derivative of xyz.
1 AnswerMathematics8 years agoI Need HELP with Partial Derivatives?
1.Verify that the assumptions of Clairaut's theorem hold true and that the conclusion holds as well (u (subscript xy)=u (subscriptyx) ):
u=e^(xy)sin(y)
Please show all work and expecially explain how the assumption hold true
thanks!
also:
2. If g(x,y,z)= sqrt(1+xz)+ sqrt(1-xy) , find g(subscript xyz). [Hint: Use a different order of differentiation for each term]
1 AnswerMathematics8 years agoI need help finding limits ASAP?
Find the limit, if it exists, or show that the limit doesn't exist:
1. Limit (x,y)--> (0,0) of (x^3-xy)/(x-sqrt(y))
2. Limit (x,y)--> (0,0) of (x^3* y^4)/(x^2+2y^4)
please show all work and explain
thanks!
2 AnswersHomework Help8 years agoPLEASE HELP ASAP: How do I minimize and simplify this function?
How do i minimize this function (find the p in [0,1] that minimizes):
rp(x)=5p+4-(sqrt(97p-16))
1 AnswerHomework Help8 years agoPLEASE HELP-Can this be simplified?
(5p+4)- (sqrt.(97p-16))
can it be simplified so that only 1 term has p in it?
thanks!
1 AnswerMathematics8 years agoCan this expression be simplified?
(5p+4)- (sqrt.(97p-16))
can it be simplified?
thanks!
1 AnswerHomework Help8 years agoFind the limit, if it exists?
can u do this without using polar coordinates?
1.) lim (x(y^4))/(x^2+y^8)
(x, y)→(0, 0)
2.) lim (x^2+y^2)/( (sqrt.(x^2+y^2+64) - 8)
(x, y)→(0, 0)
Please show all work and explain
thanks!
1 AnswerHomework Help8 years agoUse polar coordinates to find the limit?
Use polar coordinates to find the limit. [if (r,θ) are polar coordinates of the point (x,y) with r >= 0, note that r--> 0+ as (x,y)--> (0,0)].
lim (x,y)--> (0,0) of (x^7+x^6)/(x^2+y^2)
please explain
thanks!
1 AnswerHomework Help8 years agoFind the limit, if it exists?
1.) lim (x(y^4))/(x^2+y^8)
(x, y)→(0, 0)
2.) lim (x^2+y^2)/( (sqrt.(x^2+y^2+64) - 8)
(x, y)→(0, 0)
Please show all work and explain
thanks!
1 AnswerMathematics8 years agoI need help finding Limits?
Find the limit if it exists or show that the limit does not exist
1.) limit of (y^2 • sinx)/ (x^4+y^4) as (x,y) goes to (0,0)
2.) limit of (xy-y)/( (x-1)^2 + y^2 ) as (x,y) goes to (1,0)
Please show all ur work and all the steps
thanks!
1 AnswerMathematics8 years agoDetermine if the following functions are homogeneous or not and determine its degree?
Please show all your work
thanks so much!!
a.) f(x,y)=3x^5y+2x^2y^4-3x^3y^4
b.) f(x,y)=(x^2-y^2)/ (x^2+y^2)+3
c.) f(x,y)=x^(3/4) • y^(1/4) + 6x +4
1 AnswerMathematics8 years agoDetermine if the following function is homogeneous or not?
f(x,y)=3x^5y+2x^2y^4-3x^3y^4
please explain
thanks!
1 AnswerMathematics8 years agoPLEASE HELP-Write the equations of the quadratic surfaces in standard form and identify them?
a.) -x^2-y^2+z^2 = 1
b.) -x^2+y^2-z^2=0
c) x^2+y^2-z=0
d.) x+y=1
Please explain
and arent't some of them already in standard form?
1 AnswerMathematics8 years ago