Is this f'(x) or partial derivative?
posted by Anonymous .
Find d VC/ d y = ((y/240)^2)(w)
= 2yw/240^2 + 0 + y^2/240^2
but final answer is....
= 2yw/240^2
So, is the question asking for partial derivative or first derivative? I think partial because the final answer only took the derivative with respect to y.

If VC(y)=((y/240)^2)(w)
then VC is not dependent on w, so if you differentiate as a product, the term containing dw/dy drops out (because dw/dy=0), giving you the correct answer.
If w is a function of y, namely w=w(y), then the term dw/dy should be kept:
d(VC)/dy = 2yw/240^2 + y^2/240^2*(dw/dy)
Respond to this Question
Similar Questions

Math
If 450 kilowatts of electric used cost 25.32, then how much would 240 kilowatts of electric cost? 
Math ttriangles
how would I find the hieght of a isocscles triangle if the base was 20 and the area was 240? 
Algebra
Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet? 
Algebra Repost
Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet? 
Exponent Rules
SAC = STC/y = (w1(y/240)^2 + 48w2) / y = (w1)(y/240)^2(y) + ((48)(w2))/y = (w1)(y/240)^2 + ((48)(w2))/y < this is the final answer, but I don't understand it because of this part: (w1)(y/240)^2(y) > (w1)(y/240)^2 Don't you … 
Math: partial derivative
z=u(v+w)^(1/2) find ∂^3z/(∂u∂v∂w) what partial derivative am I suppose to be finding exactly? 
math
The question is a principal is choosing between field trips. The final cost is $600. The second costs $240 plus $40 per student. For what number of students is the first trip less expensive. I got the 1st trip would be less expensive … 
Calculus Please check
Please check my answers and let me know if I did something wrong. Thank you! Find the partial derivative of x, and the partial derivative of y, then the partial derivative of x (1,1), and the partal derivative of y (1,1). f(x,y) … 
Math
Your goal is to save at least $240.00 over the next 4 weeks. How much money must you save each week in order to meet that goal? 
Math
Yoour goal is to save at least $240.00 over the next 4 weeks.How much must you save each week in order to meet that goal. Write and solve an inequality. a)4x>240;x>60 b)x>240;x>4 c)240x>60;x>60 d)4x<240;x<60******* …