Thomas' Calculus
4th Edition
ISBN: 9780134439099
Author: Hass, Joel., Heil, Christopher , WEIR, Maurice D.
Publisher: Pearson,
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Chapter 9.1, Problem 13E
To determine
To sketch: The direction field for the differential equation roughly by using the given graph of
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The graph of
2(x² + y²)² = 25 (x²-y²), shown
in the figure, is a lemniscate of
Bernoulli. Find the equation of the
tangent line at the point (3,1).
-10
Write the expression for the slope in terms of x and y.
slope =
4x³ + 4xy2-25x
2
3
4x²y + 4y³ + 25y
Write the equation for the line tangent to the point (3,1).
LV
Q
+
Chapter 9 Solutions
Thomas' Calculus
Ch. 9.1 - In Exercises 1–4, match the differential equations...Ch. 9.1 - In Exercises 1–4, match the differential equations...Ch. 9.1 - In Exercises 1–4, match the differential equations...Ch. 9.1 - In Exercises 1–4, match the differential equations...Ch. 9.1 - Prob. 5ECh. 9.1 - Prob. 6ECh. 9.1 - Prob. 7ECh. 9.1 - Prob. 8ECh. 9.1 - In Exercises 7–12, write an equivalent first-order...Ch. 9.1 - Prob. 10E
Ch. 9.1 - Prob. 11ECh. 9.1 - In Exercises 7–12, write an equivalent first-order...Ch. 9.1 - Prob. 13ECh. 9.1 - In Exercises 13 and 14, consider the differential...Ch. 9.1 - In Exercises 15–20, use Euler’s method to...Ch. 9.1 - Prob. 16ECh. 9.1 - Prob. 17ECh. 9.1 - Prob. 18ECh. 9.1 - Prob. 19ECh. 9.1 - In Exercises 15–20, use Euler’s method to...Ch. 9.1 - Use the Euler method with dx = 0.2 to estimate...Ch. 9.1 - Prob. 22ECh. 9.1 - Prob. 23ECh. 9.1 - Prob. 24ECh. 9.1 - Prob. 25ECh. 9.1 - Prob. 26ECh. 9.2 - Solve the differential equations in Exercises...Ch. 9.2 - Solve the differential equations in Exercises...Ch. 9.2 - Prob. 3ECh. 9.2 - Prob. 4ECh. 9.2 - Prob. 5ECh. 9.2 - Solve the differential equations in Exercises...Ch. 9.2 - Prob. 7ECh. 9.2 - Prob. 8ECh. 9.2 - Solve the differential equations in Exercises...Ch. 9.2 - Prob. 10ECh. 9.2 - Solve the differential equations in Exercises...Ch. 9.2 - Solve the differential equations in Exercises...Ch. 9.2 - Prob. 13ECh. 9.2 - Prob. 14ECh. 9.2 - Prob. 15ECh. 9.2 - Solve the initial value problems in Exercises...Ch. 9.2 - Prob. 17ECh. 9.2 - Prob. 18ECh. 9.2 - Prob. 19ECh. 9.2 - Prob. 20ECh. 9.2 - Solve the exponential growth/decay initial value...Ch. 9.2 - Prob. 22ECh. 9.2 - Prob. 23ECh. 9.2 - Prob. 24ECh. 9.2 - Prob. 25ECh. 9.2 - Current in an open RL circuit If the switch is...Ch. 9.2 - Prob. 27ECh. 9.2 - Derivation of Equation (7) in Example 4
Show that...Ch. 9.2 - Prob. 29ECh. 9.2 - Prob. 30ECh. 9.2 - Prob. 31ECh. 9.2 - Solve the Bernoulli equations in Exercises...Ch. 9.3 - Coasting bicycle A 66-kg cyclist on a 7-kg bicycle...Ch. 9.3 - Prob. 2ECh. 9.3 - Prob. 3ECh. 9.3 - Prob. 4ECh. 9.3 - Prob. 5ECh. 9.3 - Prob. 6ECh. 9.3 - Prob. 7ECh. 9.3 - Prob. 8ECh. 9.3 - Prob. 9ECh. 9.3 - Prob. 10ECh. 9.3 - Show that the curves 2x2 + 3y2 = 5 and y2 = x3 are...Ch. 9.3 - Prob. 12ECh. 9.3 - Salt mixture A tank initially contains 100 gal of...Ch. 9.3 - Prob. 14ECh. 9.3 - Fertilizer mixture A tank contains 100 gal of...Ch. 9.3 - Prob. 16ECh. 9.4 - Prob. 1ECh. 9.4 - Prob. 2ECh. 9.4 - Prob. 3ECh. 9.4 - Prob. 4ECh. 9.4 - Prob. 5ECh. 9.4 - Prob. 6ECh. 9.4 - Prob. 7ECh. 9.4 - Prob. 8ECh. 9.4 - Prob. 9ECh. 9.4 - Prob. 10ECh. 9.4 - Prob. 11ECh. 9.4 - Prob. 12ECh. 9.4 - Prob. 13ECh. 9.4 - Controlling a population The fish and game...Ch. 9.4 - Prob. 15ECh. 9.4 - Prob. 16ECh. 9.4 - Prob. 17ECh. 9.4 - Prob. 18ECh. 9.4 - Prob. 19ECh. 9.4 - Prob. 20ECh. 9.5 - Prob. 1ECh. 9.5 - Prob. 2ECh. 9.5 - Develop a model for the growth of trout and bass,...Ch. 9.5 - Prob. 4ECh. 9.5 - Consider another competitive-hunter model defined...Ch. 9.5 - An economic model Consider the following economic...Ch. 9.5 - Two trajectories approach equilibrium Show that...Ch. 9.5 - Prob. 8ECh. 9.5 - Prob. 9ECh. 9.5 - Prob. 10ECh. 9.5 - Prob. 11ECh. 9.5 - In 1925 Lotka and Volterra introduced the...Ch. 9.5 - Prob. 13ECh. 9.5 - At some time during a trajectory cycle, a wolf...Ch. 9 - Prob. 1GYRCh. 9 - What is a general solution? What is a particular...Ch. 9 - Prob. 3GYRCh. 9 - Prob. 4GYRCh. 9 - Prob. 5GYRCh. 9 - What is an orthogonal trajectory of a family of...Ch. 9 - Prob. 7GYRCh. 9 - Prob. 8GYRCh. 9 - Prob. 9GYRCh. 9 - Prob. 10GYRCh. 9 - Prob. 1PECh. 9 - Prob. 2PECh. 9 - In Exercises 1-22, solve the differential...Ch. 9 - Prob. 4PECh. 9 - Prob. 5PECh. 9 - In Exercises 1-22, solve the differential...Ch. 9 - Prob. 7PECh. 9 - Prob. 8PECh. 9 - Prob. 9PECh. 9 - Prob. 10PECh. 9 - Prob. 11PECh. 9 - Prob. 12PECh. 9 - Prob. 13PECh. 9 - Prob. 14PECh. 9 - Prob. 15PECh. 9 - Prob. 16PECh. 9 - Prob. 17PECh. 9 - Prob. 18PECh. 9 - Prob. 19PECh. 9 - Prob. 20PECh. 9 - Prob. 21PECh. 9 - Prob. 22PECh. 9 - Prob. 23PECh. 9 - Prob. 24PECh. 9 - Prob. 25PECh. 9 - Prob. 26PECh. 9 - Prob. 27PECh. 9 - Prob. 28PECh. 9 - Prob. 29PECh. 9 - Prob. 30PECh. 9 - Prob. 31PECh. 9 - Prob. 32PECh. 9 - Prob. 35PECh. 9 - Prob. 36PECh. 9 - In Exercises 35–38, sketch part of the equation’s...Ch. 9 - Prob. 38PECh. 9 - Prob. 39PECh. 9 - Prob. 40PECh. 9 - Prob. 41PECh. 9 - Prob. 42PECh. 9 - Prob. 43PECh. 9 - Prob. 44PECh. 9 - Prob. 1AAECh. 9 - Prob. 2AAECh. 9 - Prob. 3AAECh. 9 - Prob. 4AAECh. 9 - Prob. 5AAECh. 9 - Prob. 6AAECh. 9 - Prob. 7AAECh. 9 - Prob. 8AAECh. 9 - Prob. 9AAECh. 9 - Prob. 10AAE
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