# calculus

find f(x,y+k)-f(x,y)/k when
f(x,y)=x^2y+2xy^2

1. 👍 0
2. 👎 0
3. 👁 61

## Similar Questions

1. ### pre-cal

Use Pascal's triangle to expand the expression. (x − y)5 so I tried to work this out: (x-y)^5 = [(x-y)(x-y)][(x-y)(x-y)](x-y) (x-y)^2 = (x-y)(x-y) = x^2 - 2xy + y^2 x^2 - 2xy + y^2)(x^2 - 2xy + y^2) = x^4 -4x^3y + 6x^2y^2 -

asked by James on August 12, 2015
2. ### Algebra

Simplify (2xy^2+3)((2xy^2)^2-(2xy^2)(3)+(3)^2) This reminds me of (U+a)(U^2- aU + a^2). When mulipltiplied out, one gets a cubic equation. Do you remember the formula for factoring the sum of two cubes? a^3+b^3= ????

asked by Juri on August 9, 2007
3. ### Calculus

Find y" by implicit differentiation. x^3+y^3 = 1 (x^3)'+(y^3)' = (1)' 3x^2+3y^2(y') = 0 3y^2(y') = -3x^2 y' = -3x^2/3y^2 y' = -x^2/y^2 y" = [(y^2)(-x^2)'-(-x^2)(y^2)']/y^4 y" = [(y^2)(-2x)-(-x^2)(2y)]/y^4 y" =

asked by Justin on September 27, 2015
4. ### ap calc

find the equations of ALL horizontal tangents to the curve y^2=(x^2+4)/x, if any exist This is what I have so far: xy^2= x^2+4 2xyDy/Dx =2x-y^2 dy/dx = (2x- y^2)/2xy (2x- y^2)/2xy = 0 2x-y^2 I don't know what to do next

asked by Anonymous on October 8, 2014
5. ### ap calc

find the equation of all horizontal tangents to the curve y^2 = (x^2+4)/x, if any exist this is what I have so far: xy^2= x^2+4 2xydy/dx = 2x-y^2 dy/dx = (2x-y^2)/2xy (2x-Y^2)/2xy = 0 2x- Y^2 = 0 I don't know what to do after this

asked by Anonymous on October 8, 2014
6. ### calculus

The equation x^2 y+2xy^3=8defines y as a function of x,y=f(x), near x=2, y=1. a) Find dy/dx. b) Now, find the slope of the curve x^2y+2xy^3=8 when x=2, y=1.

asked by ibo on September 29, 2010
7. ### AP Calc

Find the equation of ALL horizontal tangents to the curve y^2=x^2+4/x, if any exists. My work: Derivative- First I multiply across and got x^2+4=xy^2 2x+0=(x)(2y(dy/dx)+(y^2) 2x-y^2=2xy(dy/dx) dy/dx=2x-y^2/2xy=x-y^2/xy I don't

asked by David on October 6, 2014
8. ### Algebra

I thought number 4 on this list was incorrect but didn't know how to fully explain it here is the list that I have. Please look at the following simplification of an algebraic expression. Which line contains the mistake and why?

asked by Linda on March 8, 2013
9. ### Math

Can 2xy - y - 1 be factored out? How? about all you can do is take the common y out of the first two terms; that in itself is not much help. dont know if this is rite or not..but just a guess.. assuming 2xy - y - 1 = 0 2xy - y = 1

asked by Sarah on August 15, 2007
10. ### Algebra

Please look at the following simplification of an algebraic expression. Which line contains the mistake and why? Line 1: (2x + 6x) + 4y + 3x - 2xy Line 2: (8x) + 4y + 3x - 2xy Line 3: 8x + 3x + 4y - 2xy Line 4: 11x + 4y - 2xy Line

asked by Linda on March 11, 2013
11. ### Algebra (new one since I put "match" (bad speller)

I have a few match problems that I can't figure out. 1.solve: 3x+5=x√7 (that's a radical sign) 2.factor: (2k+3)2-(2x+3)(y-2)-20(y-2)2 (the "2" after (2k+3) ans (y-2) is suppose to be a square sign. thanks if you can help, or

asked by Sarah on January 21, 2007

More Similar Questions