4 y 2 4 2 2y 2

    • [PDF File]Unit #5 - Implicit Di erentiation, Related Rates Implicit ...

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      2x+ 2 2y 4 2x+ 2 = 0 x= 1 Substituting x= 1 back into the circle equation to nd the matching ycoordinates gives (1) 2+ y2(1) 4 = 1 y2 4y= 0 y(y 4) = 0 y= 0; 4 The points with horizontal tangents are (1,0) and (1,4). (b)The points with vertical tangents are those where the denominator of dy dx is zero (making the slope unde ned). From part (a ...


    • [PDF File]4.2 Line Integrals - Cornell University

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      4.2.17 Consider the vector elds F(x;y;z) = z2^i+ 2y^j+ xzk;^ (x;y;z) R3: depending on the real number (parameter) . a) Show that F is conservative if, and only if, = 1 2 b) For = 1 2, nd a potential function. c) For = 1 2, evaluate the line integral Z C FdR; where Cis the straight line from the origin to the point (1,1,1).


    • [PDF File]Solution to Math 2433 Calculus III Term Exam. #3

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      2. Let T be the solid bounded by the paraboloid z= 4 x2 y2 and below by the xy-plane. Find the volume of T. (Hint, use polar coordinates). Answer The intersection of z= 4 2x 22y and xyplane is 0 = 4 x2 y;i.e. x2 +y = 4: In polar coordinates, z= 4 x2 y 2is z= 4 r:So, the volume is Z Z 4 x2 y2dxdy = Z 2ˇ 0 Z 2 0 4 r2 rdrd = 2ˇ Z 2 0 4r r3 2 dr ...


    • [PDF File]Quadric Surfaces - CoAS

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      After completing the square, we can rewrite the equation as: 4(x 21)2 + (y + 5) + 16(z + 1)2 = 37 This is a hyperboloid of 1 sheet which has been shifted. Speci cally, its central



    • [PDF File]Math 241, Quiz 11. 4/8/13. Name

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      16 2y 0 dy= 4 3 Z 4 4 (16 y2)3=2 dy: We now employ a trigonometric substitution by considering to be the angle in a right triangle with arms of lengths p 16 y2 and yand hypotenuse 4 such that sin = y=4 and cos = (1=4) p 16 y 2. It follows that dy= 4cos d and (16 y)3=2 = (4cos )3. The integral computation now becomes 4 3 Z 4 4


    • [PDF File]Unit #24 - Lagrange Multipliers Section15

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      12. f(x,y) = x2 +2y2,x2 +y2 ≤ 4 Note that we are dealing with an inequality for the constraint. We can consider any point in oronthe boundary of a circle with radius 2. To look onthe boundary, we use Lagrange multipliers. To look at the interior, we identify the critical points of f(x,y). We’ll start with the Lagrange multipliers: f


    • [PDF File]Limits and continuity for (Sect. 14.2) The limit of ...

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      (x,y)→(2,1) x2 +2y − x √ x − y. Solution: The function above is a rational function in x and y and its denominator is defined and does not vanish at (2,1). Therefore lim (x,y)→(2,1) x2 +2y − x √ x − y = 22 +2(1) − 2 √ 2 − 1, that is, lim (x,y)→(2,1) x2 +2y − x √ x − y = 4. C



    • [PDF File]Midterm Exam I, Calculus III, Sample A

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      So, the equation of the plane is 6(x 0) + 4(y 0) + 2(z 0) = 0, that is, 3x+ 2y+ z= 0. 3.(6 points) Find the vector projection of b onto a if a = h4;2;0iand b = h1;1;1i. Solution: Since jaj 2 = 4 2 + 2 2 = 20, the vector projection of b onto a is is equal to


    • [PDF File]SOLUTIONS - UCSD Mathematics | Home

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      Problem 2. Determine the global max and min of the function f(x;y) = x2 2x+2y2 2y+2xy over the compact region 1 x 1; 0 y 2: Solution: We look for the critical points in the interior:


    • [PDF File]Review guide for the final exam in Math 233

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      1 BASIC MATERIAL. 2 Example 4 Evaluate R R R (3x + 4y2)dA, where R is the region in the upper half-plane bounded by the circles x2 = y2 = 1 and x2 +y2 = 4. Solution : The region R can be described as R = {(x,y) | y ≥ 0, 1 ≤ x2 +y2 ≤ 4}. It is a half-ring and in polar coordinates it is given by 1 ≤ r ≤ 2, 0 ≤ θ ≤ π.


    • [PDF File]Name: SOLUTIONS Date: 10/06/2016

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      2.Find the tangent plane and the normal line to the surface x 2y+xz2 = 2yzat the point P= (1;1;1). Solution: The given surface is the zero level surface of the function F(x;y;z) =


    • [PDF File]Math 2142 Homework 4, Linear ODE Solutions

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      3x2 + ex 2y 4 with y(0) = 1 Solution. Separating the variables, integrating and completing the square gives Z 2y 24dy = Z 3x + ex dx y2 x4y = x3 + e + c (y x2)2 4 = x3 + e + c (y 32)2 = x + ex + bc y = 2 p x3 + ex + bc where bc= c + 4 is an altered constant of integration. To solve for the constant bc, we plug in


    • [PDF File]z=8−x2−y2 S z=x2+y2 R x2 +y2

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      the projected region R in the x−y plane is x2 +y2 = 4. Where the two surfaces intersect z = x 2 + y 2 = 8 − x 2 − y 2 . So, 2x 2 + 2y 2 = 8 or x 2 + y 2 = 4 = z, this is the curve at


    • [PDF File]5.8 Lagrange Multipliers

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      Multivariate Calculus; Fall 2013 S. Jamshidi 4. x4 +y4 +z4 =1 If x,y,z are nonzero, then we can consider Therefore, we have the following equations: 1. 1=2x2 2. 1=2y2 3. 1=2z2 4. x4 +y4 +z4 =1 Remember, we can only make this simplification if all the variables are nonzero!


    • [PDF File]Homework Assignment 4 - Elizabethtown College

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      x(x;y) = y(x4 y4 + 4x2y2) (x2 + y2)2 and f y(x;y) = x(x4 y4 4x2y2) (x2 + y2)2: Substituting x= 0 and y= 0 in the two formulas respectively gives us the same answer as part (a). 3. Show that f(x;y) = p x2 + y2 is not di erentiable at the origin by showing that: 1


    • [PDF File]Math 114 Quiz & HW No.3 Selected Solutions

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      2(x2 −4x+4)+2y2 +2(x2 +12x+36) = 1+8+72 ⇒ 2(x−2) 2 +2y 2 +2(z +6) 2 = 81 ⇒ (x−2) 2 +y 2 +(z +6) 2 = 81/2, which is an equation of a sphere with center (2,0,−6) and radius



    • [PDF File]Mathematics 261: Calculus III Guided Notes to accompany ...

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      4x2 2y+ 2z = 0 , y= x2 1=4 + z2 1=2 This is a paraboloid with vertex at the origin, opening along the y-axis. Figure 12.1: Paraboloid Example 26. x 2 y + z 2x+ 2y+ 4z+ 2 = 0 , (x 21) 2 (y 21)2 2 + (z+ 2) 2 = 1 This is a hyperboloid of one sheet centered at (1;1; 2). Figure 12.2: Hyperboloid of one sheet



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