ok, could you elaborate on that a little. I know what the chain rule is but I don't see it's application here. The result ought to be the same regardless of when I plug in the value of the radius (in this case c/2pi). I don't see why the value of the radius would ever change. That seems like it...
Find the derivative of volume of a sphere.
Volume=4/3 * pi * r^3
OR Volume = 4/3 * pi * (c/2pi)^3 where c=circumference
The Attempt at a Solution
This is where I have had some serious trouble. Allow me to explain.
Wow, good catch. I didn't realize the contradiction. The way I stated the problem is all the info given to me by the question.
The problem asks to find the slope of the tangent at the point where x=a. A is an x value, not a point. The problem does not tell me what a is.
I will edit the...
The question in it's complete wording:
Consider the following curve.
y = 8 + 5x2 - 2x3.
Find the slope of the tangent to the curve at the point where x = a.
(y2-y1)/(x2-x1) where x2=x1+dx and the limit of dx is approaching zero and y2=f(x+dx).
I am sorry to be so stubborn, but I still don't see how to come any closer to the answer. Let's say I put a test charge of 1.00 Coulomb at the position (3.00m, 0.00m).
Now the equation I will use will be:
E = KQ1/r2 + KQ2/r2
Going by this and using the numbers I have chosen for my...
A charge of 5.00mC is at the point (1.00m, 0.00m) and a charge of -4.00 is at the point (-1.00m, 0.00m). At what point, or points, on the x-axis is E=0?
I decided to use the equation for voltage and set it up like this:
E = 0 = (k)(Q1) / x +...
A 19.0 kg speaker is suspended 1.6m from the ceiling by two cables each 2.5m in length. the cables come to the top of the speaker and each cable forms and equal angle with the ceiling.
i have no idea. i am completely lost.
The Attempt at a...