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Math Calculus Calculus, Early Transcendentals

The unit tangent vector T ( t ) for the vector r ( t ) = sin 2 t i + cos 2 t j + tan 2 t k at t = π 4 .

The unit tangent vector T ( t ) for the vector r ( t ) = sin 2 t i + cos 2 t j + tan 2 t k at t = π 4 .

Solution Summary: The author explains how to find the unit tangent vector T(t) at a finite value of scalar parameter t.

Calculus, Early Transcendentals

Calculus, Early Transcendentals

9th Edition

ISBN: 9781337613927

Author: Stewart

Publisher: CENGAGE L

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Question

Chapter 13.2, Problem 20E

To determine

To find: The unit tangent vector T(t) for the vector r(t)=sin2t i+cos2t j+tan2t k at t=π4.

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Chapter 13.2, Problem 19E

Chapter 13.2, Problem 21E

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Chapter 13 Solutions

Calculus, Early Transcendentals

Ch. 13.1 - Prob. 1E Ch. 13.1 - Prob. 2E Ch. 13.1 - Find the limit. 3. limt0(e3ti+t2sin2tj+cos2tk)Ch. 13.1 - Find the limit. 4. limt1(t2-tt-1i+t+8j+sintlntk)Ch. 13.1 - Find the limit. 5. limt1+t21t2,tan-1t,1e2tt Ch. 13.1 - Prob. 6E Ch. 13.1 - Prob. 7E Ch. 13.1 - Prob. 8E Ch. 13.1 - Prob. 9E Ch. 13.1 - Prob. 10E

Ch. 13.1 - Prob. 11E Ch. 13.1 - Prob. 12E Ch. 13.1 - Prob. 13E Ch. 13.1 - Prob. 14E Ch. 13.1 - Prob. 15E Ch. 13.1 - Prob. 16E Ch. 13.1 - Draw the projection of the curve onto the given...Ch. 13.1 - Prob. 18E Ch. 13.1 - Prob. 19E Ch. 13.1 - Prob. 20E Ch. 13.1 - Prob. 21E Ch. 13.1 - Prob. 22E Ch. 13.1 - Find a vector equation and parametric equations...Ch. 13.1 - Find a vector equation and parametric equations...Ch. 13.1 - Match the parametric equations with the graphs...Ch. 13.1 - Match the parametric equations with the graphs...Ch. 13.1 - Match the parametric equations with the graphs...Ch. 13.1 - Match the parametric equations with the graphs...Ch. 13.1 - Match the parametric equations with the graphs...Ch. 13.1 - Match the parametric equations with the graphs...Ch. 13.1 - Prob. 31E Ch. 13.1 - Prob. 32E Ch. 13.1 - Prob. 33E Ch. 13.1 - Prob. 34E Ch. 13.1 - Prob. 35E Ch. 13.1 - Show that the curve with parametric equations x =...Ch. 13.1 - Find three different surfaces that contain the...Ch. 13.1 - Find three different surfaces that contain the...Ch. 13.1 - Prob. 39E Ch. 13.1 - At what points does the helix r(t) = sin t, cos t,...Ch. 13.1 - Graph the curve with parametric equations x = sin...Ch. 13.1 - Graph the curve with parametric equations x = (1 +...Ch. 13.1 - Prob. 48E Ch. 13.1 - Show that the curve with parametric equations x =...Ch. 13.1 - Prob. 50E Ch. 13.1 - Prob. 51E Ch. 13.1 - Prob. 52E Ch. 13.1 - Prob. 53E Ch. 13.1 - Prob. 54E Ch. 13.1 - Prob. 55E Ch. 13.1 - Prob. 56E Ch. 13.1 - Prob. 57E Ch. 13.1 - Prob. 58E Ch. 13.1 - Properties of Limits Suppose u and v are vector...Ch. 13.2 - Prob. 1E Ch. 13.2 - Prob. 2E Ch. 13.2 - (a) Sketch the plane curve with the given vector...Ch. 13.2 - Prob. 4E Ch. 13.2 - (a) Sketch the plane curve with the given vector...Ch. 13.2 - (a) Sketch the plane curve with the given vector...Ch. 13.2 - Prob. 7E Ch. 13.2 - Prob. 8E Ch. 13.2 - Find the derivative of the vector function. 9....Ch. 13.2 - Prob. 10E Ch. 13.2 - Find the derivative of the vector function. 11....Ch. 13.2 - Prob. 12E Ch. 13.2 - Prob. 13E Ch. 13.2 - Prob. 14E Ch. 13.2 - Prob. 15E Ch. 13.2 - Prob. 16E Ch. 13.2 - Prob. 17E Ch. 13.2 - Prob. 18E Ch. 13.2 - Prob. 19E Ch. 13.2 - Prob. 20E Ch. 13.2 - Find the unit tangent vector T(t) at the given...Ch. 13.2 - Find the unit tangent vector T(t) at the given...Ch. 13.2 - Prob. 23E Ch. 13.2 - Find the unit tangent vector T(t) at the given...Ch. 13.2 - Prob. 25E Ch. 13.2 - Prob. 26E Ch. 13.2 - Prob. 27E Ch. 13.2 - Find parametric equations for the tangent line to...Ch. 13.2 - Find a vector equation for the tangent line to the...Ch. 13.2 - Find the point on the curve r(t) = 2 cos t, 2 sin...Ch. 13.2 - Find parametric equations tor the tangent line to...Ch. 13.2 - Find parametric equations tor the tangent line to...Ch. 13.2 - Find parametric equations tor the tangent line to...Ch. 13.2 - (a) Find the point of intersection of the tangent...Ch. 13.2 - Prob. 35E Ch. 13.2 - At what point do the curves r1(t) = t, 1 t, 3 +...Ch. 13.2 - Evaluate the integral. 35. 02(ti-t3j+3t5k)dt Ch. 13.2 - Evaluate the integral. 36. 14(2t3/2i+(t+1)tk)dt Ch. 13.2 - Evaluate the integral. 37....Ch. 13.2 - Evaluate the integral. 38....Ch. 13.2 - Evaluate the integral. 39....Ch. 13.2 - Evaluate the integral. 40. (te2ti+t1-tj+11-t2k)dt Ch. 13.2 - Find r(t) if r'(t) = 2t i + 3t2 j + t k and r(1) =...Ch. 13.2 - Find r(t) if r'(t) = t i + et j + tet k and r(0) =...Ch. 13.2 - Prove Formula 1 of Theorem 3.Ch. 13.2 - Prove Formula 3 of Theorem 3.Ch. 13.2 - Prob. 47E Ch. 13.2 - Prob. 48E Ch. 13.2 - If u(t) = sin t, cos t, t) and v(t) = t, cos t,...Ch. 13.2 - Prob. 50E Ch. 13.2 - Prob. 51E Ch. 13.2 - Prob. 52E Ch. 13.2 - Prob. 53E Ch. 13.2 - Prob. 54E Ch. 13.2 - Show that if r is a vector function such that r''...Ch. 13.2 - Prob. 56E Ch. 13.2 - Prob. 57E Ch. 13.2 - Prob. 58E Ch. 13.2 - Prob. 59E Ch. 13.2 - Prob. 60E Ch. 13.3 - (a) Use Equation 2 to compute the length of the...Ch. 13.3 - Prob. 2E Ch. 13.3 - Find the length of the curve. 1. r(t) =t, 3 cos t,...Ch. 13.3 - Find the length of the curve. 2. r(t)=2t,t2,13t3,...Ch. 13.3 - Find the length of the curve. 3. r(t)=2ti+etj+etk,...Ch. 13.3 - Find the length of the curve. 4. r(t) =cos t i +...Ch. 13.3 - Find the length of the curve. 5. r(t) = i + t2 j +...Ch. 13.3 - Find the length of the curve. 6. r(t) = t2 i + 9t...Ch. 13.3 - Find the length of the curve correct to four...Ch. 13.3 - Find the length of the curve correct to four...Ch. 13.3 - Find the length of the curve correct to four...Ch. 13.3 - Graph the curve with parametric equations x = sin...Ch. 13.3 - Let C be the curve of intersection of the...Ch. 13.3 - Find, correct to four decimal places, the length...Ch. 13.3 - Prob. 15E Ch. 13.3 - Prob. 16E Ch. 13.3 - Suppose you start at the point (0, 0. 3) and move...Ch. 13.3 - Reparametrize the curve r(t)=(2t2+11)i+2tt2+1j...Ch. 13.3 - (a) Find the unit tangent and unit normal vectors...Ch. 13.3 - (a) Find the unit tangent and unit normal vectors...Ch. 13.3 - (a) Find the unit tangent and unit normal vectors...Ch. 13.3 - (a) Find the unit tangent and unit normal vectors...Ch. 13.3 - (a) Find the unit tangent and unit normal vectors...Ch. 13.3 - (a) Find the unit tangent and unit normal vectors...Ch. 13.3 - Use Theorem 10 to find the curvature. 21. r(t) =...Ch. 13.3 - Use Theorem 10 to find the curvature. 22. r(t) = t...Ch. 13.3 - Use Theorem 10 to find the curvature. 23....Ch. 13.3 - Prob. 28E Ch. 13.3 - Find the curvature of r(t) = t, t2, t3 at the...Ch. 13.3 - Graph the curve with parametric equations x = cos...Ch. 13.3 - Use Formula 11 to find the curvature. 27. y = x4...Ch. 13.3 - To find: The curvature of y=tanx using Formula 11....Ch. 13.3 - Use Formula 11 to find the curvature. 27. y = x4...Ch. 13.3 - At what point does the curve have maximum...Ch. 13.3 - At what point does the curve have maximum...Ch. 13.3 - Find an equation of a parabola that has curvature...Ch. 13.3 - (a) Is the curvature of the curve C shown in the...Ch. 13.3 - Prob. 38E Ch. 13.3 - Prob. 39E Ch. 13.3 - Prob. 41E Ch. 13.3 - Prob. 42E Ch. 13.3 - Prob. 43E Ch. 13.3 - Prob. 44E Ch. 13.3 - Prob. 45E Ch. 13.3 - Prob. 46E Ch. 13.3 - Curvature of Plane Parametric Curves The curvature...Ch. 13.3 - Curvature of Plane Parametric Curves The curvature...Ch. 13.3 - Prob. 49E Ch. 13.3 - Consider the curvature at x = 0 for each member of...Ch. 13.3 - Prob. 51E Ch. 13.3 - Prob. 52E Ch. 13.3 - Find equations of the normal plane and osculating...Ch. 13.3 - Find equations of the normal plane and osculating...Ch. 13.3 - Find equations of the osculating circles of the...Ch. 13.3 - Prob. 56E Ch. 13.3 - At what point on the curve x = t3, y = 3t, z = t4...Ch. 13.3 - Find equations of the normal and osculating planes...Ch. 13.3 - Prob. 60E Ch. 13.3 - Prob. 61E Ch. 13.3 - Prob. 62E Ch. 13.3 - Show that the curvature is related to the tangent...Ch. 13.3 - Prob. 64E Ch. 13.3 - Prob. 65E Ch. 13.3 - Prob. 66E Ch. 13.3 - Use Formula 14 to find the torsion at the given...Ch. 13.3 - Prob. 68E Ch. 13.3 - Prob. 69E Ch. 13.3 - Prob. 70E Ch. 13.3 - Prob. 71E Ch. 13.3 - Frenet-Serret Formulas The following formulas,...Ch. 13.3 - Show that the circular helix r(t)=acost,asint,bt ,...Ch. 13.3 - Find the curvature and torsion of the curve x =...Ch. 13.3 - The DNA molecule has the shape of a double helix...Ch. 13.4 - The table gives coordinates of a particle moving...Ch. 13.4 - Prob. 2E Ch. 13.4 - Prob. 3E Ch. 13.4 - Prob. 4E Ch. 13.4 - Prob. 5E Ch. 13.4 - Prob. 6E Ch. 13.4 - Prob. 7E Ch. 13.4 - Find the velocity, acceleration, and speed of a...Ch. 13.4 - Prob. 9E Ch. 13.4 - Prob. 10E Ch. 13.4 - Find the velocity, acceleration, and speed of a...Ch. 13.4 - Find the velocity, acceleration, and speed of a...Ch. 13.4 - Find the velocity, acceleration, and speed of a...Ch. 13.4 - Find the velocity and position vectors of a...Ch. 13.4 - Find the velocity and position vectors of a...Ch. 13.4 - Find the velocity and position vectors of a...Ch. 13.4 - The position function of a particle is given by...Ch. 13.4 - What force is required so that a particle of mass...Ch. 13.4 - A force with magnitude 20 N acts directly upward...Ch. 13.4 - Show that if a particle moves with constant speed,...Ch. 13.4 - A projectile is fired with an initial speed of 200...Ch. 13.4 - Rework Exercise 23 if the projectile is fired from...Ch. 13.4 - A ball is thrown at an angle of 45 to the ground....Ch. 13.4 - A projectile is tired from a tank with initial...Ch. 13.4 - A rifle is fired with angle of elevation 36. What...Ch. 13.4 - Prob. 28E Ch. 13.4 - A medieval city has the shape of a square and is...Ch. 13.4 - Show that a projectile reaches three-quarters of...Ch. 13.4 - A ball is thrown eastward into the air from the...Ch. 13.4 - A ball with mass 0.8 kg is thrown southward into...Ch. 13.4 - Another reasonable model for the water speed of...Ch. 13.4 - Prob. 35E Ch. 13.4 - (a) If a particle moves along a straight line,...Ch. 13.4 - Prob. 37E Ch. 13.4 - Prob. 38E Ch. 13.4 - Find the tangential and normal components of the...Ch. 13.4 - Prob. 40E Ch. 13.4 - Find the tangential and normal components of the...Ch. 13.4 - Prob. 42E Ch. 13.4 - The position function of a spaceship is...Ch. 13.4 - A rocket burning its onboard fuel while moving...Ch. 13.4 - Prob. 1AP Ch. 13.4 - Prob. 3AP Ch. 13 - Prob. 1CC Ch. 13 - Prob. 2CC Ch. 13 - Prob. 3CC Ch. 13 - Prob. 4CC Ch. 13 - Prob. 5CC Ch. 13 - (a) What is the definition of curvature? (b) Write...Ch. 13 - Prob. 7CC Ch. 13 - Prob. 8CC Ch. 13 - State Keplers Laws.Ch. 13 - Prob. 1TFQ Ch. 13 - Prob. 2TFQ Ch. 13 - Prob. 3TFQ Ch. 13 - Prob. 4TFQ Ch. 13 - Prob. 5TFQ Ch. 13 - Prob. 6TFQ Ch. 13 - Prob. 7TFQ Ch. 13 - Determine whether the statement is true or false....Ch. 13 - Determine whether the statement is true or false....Ch. 13 - Prob. 10TFQ Ch. 13 - Prob. 11TFQ Ch. 13 - Determine whether the statement is true or false....Ch. 13 - Determine whether the statement is true or false....Ch. 13 - Prob. 14TFQ Ch. 13 - Prob. 15TFQ Ch. 13 - (a) Sketch the curve with vector function r(t) = t...Ch. 13 - Let r(t) = 2-t, (et 1)/t, ln(t + 1). (a) Find the...Ch. 13 - Prob. 3E Ch. 13 - Find parametric equations for the tangent line to...Ch. 13 - If r(t) = t2 i + t cos t j + sin t k, evaluate...Ch. 13 - Prob. 6E Ch. 13 - Prob. 7E Ch. 13 - Prob. 8E Ch. 13 - The helix r1(t) = cos t i + sin t j + t k...Ch. 13 - Prob. 10E Ch. 13 - For the curve given by r(t) = sin3 t, cos3 t, sin2...Ch. 13 - Find the curvature of the ellipse x = 3 cos t, y =...Ch. 13 - Find the curvature of the curve y = x4 at the...Ch. 13 - Find an equation of the osculating circle of the...Ch. 13 - Find an equation of the osculating plane of the...Ch. 13 - The figure shows the curve C traced by a particle...Ch. 13 - A particle moves with position function r(t) = t...Ch. 13 - Find the velocity, speed, and acceleration of a...Ch. 13 - A particle starts at the origin with initial...Ch. 13 - An athlete throws a shot at an angle of 45 to the...Ch. 13 - A projectile is launched with an initial speed of...Ch. 13 - Prob. 22E Ch. 13 - Prob. 23E Ch. 13 - PROBLEM PLUS FIGURE FOR PROBLEM 1 1. A particle P...Ch. 13 - A projectile is fired from the origin with angle...Ch. 13 - (a) A projectile it fired from the origin down an...Ch. 13 - A ball rolls off a table with a speed of 2 ft/s....Ch. 13 - Find the curvature of the curve with parametric...Ch. 13 - If a projectile is fired with angle of elevation ...Ch. 13 - A cable has radius r and length L and is wound...Ch. 13 - Prob. 9PP

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