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Semester 1 Review Unit vector =

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A line that contains the point P(x 0,y 0,z 0 ) and direction vector : parametric symmetric

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The equation of the plane containing point P(x 0,y 0,z 0 ) with normal vector, Ex. Let θ be the angle between the planes 5y + 6z = 2 and 2x + 8y – 3z = 1. Find cos θ.

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Sketching 3-D Ex. Sketch

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Cylind RectRect Cylind Spher RectRect Spher

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Parameterizing curves: Derivative and integral of vector functions Ex. Find the parametric equations of the line tangent to at (1,4,4).

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Ex. Find if and

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If r(t) = displacement vector, then r(t) = velocity v(t) r (t) = accelerationa(t) |r(t)| = speedv(t)

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First and second partial derivatives Implicit differentiation: Total Differential: dz = f x dx + f y dy

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Let w = f (x,y), with x = g(t) and y = h(t): Gradient is orthogonal to level curve of f Directional derivative of f in the direction of unit vector u is

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Ex. Find the parametric equations of the line tangent to the curve of intersection of and at (-1,1,2).

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Critical point = where f x and f y are both zero, or where one is undefined d = f xx (a,b) f yy (a,b) – [ f xy (a,b)] 2 If d > 0 and f xx (a,b) < 0, then (a,b) is a rel. max. If d > 0 and f xx (a,b) > 0, then (a,b) is a rel. min. If d < 0, then (a,b) is a saddle point. If d = 0, then the test fails.

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Ex. Find the critical points of and classify them as relative maximum, relative minimum, or saddle point.

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Ex. Use Lagrange multipliers to find the maximum value of subject to the constraint

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Multiple Integrals – changing order Ex.

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Ex. Find the volume bounded by x 2 + y 2 = 64, under the plane z = y, and in the first octant.

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where ρ is density Surface area: Jacobian:

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Ex. Evaluate, where R is the region bounded by

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Bring your textbooks and ID cards on the first day of next semester so that we can exchanged them

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VECTOR FUNCTIONS 13. VECTOR FUNCTIONS Later in this chapter, we are going to use vector functions to describe the motion of planets and other objects.

VECTOR FUNCTIONS 13. VECTOR FUNCTIONS Later in this chapter, we are going to use vector functions to describe the motion of planets and other objects.

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