Bundle: A First Course in Differential Equations with Modeling Applications, Loose-leaf Version, 11th + WebAssign Printed Access Card for Zill's A ... Applications, 11th Edition, Single-Term
11th Edition
ISBN: 9781337604994
Author: Dennis G. Zill
Publisher: Cengage Learning
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Chapter 1.1, Problem 16E
In Problems 15–18 verify that the indicated function y = ϕ(x) is an explicit solution of the given first-order differential equation. Proceed as in Example 6, by considering ϕ simply as a function and give its domain. Then by considering ϕ as a solution of the differential equation, give at least one interval I of definition.
16. y′ = 25 + y2; y = 5 tan 5x
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For each of the time series, construct a line chart of the data and identify the characteristics of the time series (that is, random, stationary, trend, seasonal, or cyclical).
Year Month Units1 Nov 42,1611 Dec 44,1862 Jan 42,2272 Feb 45,4222 Mar 54,0752 Apr 50,9262 May 53,5722 Jun 54,9202 Jul 54,4492 Aug 56,0792 Sep 52,1772 Oct 50,0872 Nov 48,5132 Dec 49,2783 Jan 48,1343 Feb 54,8873 Mar 61,0643 Apr 53,3503 May 59,4673 Jun 59,3703 Jul 55,0883 Aug 59,3493 Sep 54,4723 Oct 53,164
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Chapter 1 Solutions
Bundle: A First Course in Differential Equations with Modeling Applications, Loose-leaf Version, 11th + WebAssign Printed Access Card for Zill's A ... Applications, 11th Edition, Single-Term
Ch. 1.1 - In Problems 18 state the order of the given...Ch. 1.1 - In Problems 18 state the order of the given...Ch. 1.1 - In Problems 18 state the order of the given...Ch. 1.1 - In Problems 18 state the order of the given...Ch. 1.1 - In Problems 18 state the order of the given...Ch. 1.1 - In Problems 18 state the order of the given...Ch. 1.1 - In Problems 18 state the order of the given...Ch. 1.1 - In Problems 18 state the order of the given...Ch. 1.1 - In Problems 9 and 10 determine whether the given...Ch. 1.1 - In Problems 9 and 10 determine whether the given...
Ch. 1.1 - In Problems 1114 verify that the indicated...Ch. 1.1 - In Problems 1114 verify that the indicated...Ch. 1.1 - In Problems 1114 verify that the indicated...Ch. 1.1 - In Problems 1114 verify that the indicated...Ch. 1.1 - In Problems 1518 verify that the indicated...Ch. 1.1 - In Problems 1518 verify that the indicated...Ch. 1.1 - In Problems 1518 verify that the indicated...Ch. 1.1 - In Problems 1518 verify that the indicated...Ch. 1.1 - In Problems 19 and 20 verify that the indicated...Ch. 1.1 - In Problems 19 and 20 verify that the indicated...Ch. 1.1 - In Problems 2124 verify that the indicated family...Ch. 1.1 - In Problems 2124 verify that the indicated family...Ch. 1.1 - In Problems 2124 verify that the indicated family...Ch. 1.1 - In Problems 2124 verify that the indicated family...Ch. 1.1 - In Problems 2528 use (12) to verify that the...Ch. 1.1 - In Problems 2528 use (12) to verify that the...Ch. 1.1 - In Problems 2528 use (12) to verify that the...Ch. 1.1 - In Problems 2528 use (12) to verify that the...Ch. 1.1 - Verify that the piecewise-defined function...Ch. 1.1 - In Example 7 we saw that y=1(x)=25x2 and...Ch. 1.1 - In Problems 31-34 find values of m so that the...Ch. 1.1 - In Problems 31-34 find values of m so that the...Ch. 1.1 - In Problems 31-34 find values of m so that the...Ch. 1.1 - In Problems 31-34 find values of m so that the...Ch. 1.1 - In Problems 35 and 36 find values of m so that the...Ch. 1.1 - In Problems 35 and 36 find values of m so that the...Ch. 1.1 - In Problems 3740 use the concept that y = c, x ...Ch. 1.1 - In Problems 3740 use the concept that y = c, x ...Ch. 1.1 - In Problems 3740 use the concept that y = c, x ...Ch. 1.1 - In Problems 3740 use the concept that y = c, x ...Ch. 1.1 - Prob. 41ECh. 1.1 - In Problems 41 and 42 verify that the indicated...Ch. 1.1 - Prob. 43ECh. 1.1 - Make up a differential equation that you feel...Ch. 1.1 - What function do you know from calculus is such...Ch. 1.1 - What function (or functions) do you know from...Ch. 1.1 - The function y = sin x is an explicit solution of...Ch. 1.1 - Discuss why it makes intuitive sense to presume...Ch. 1.1 - In Problems 49 and 50 the given figure represents...Ch. 1.1 - In Problems 49 and 50 the given figure represents...Ch. 1.1 - The graphs of members of the one-parameter family...Ch. 1.1 - Prob. 52ECh. 1.1 - In Example 7 the largest interval I over which the...Ch. 1.1 - In Problem 21 a one-parameter family of solutions...Ch. 1.1 - Discuss, and illustrate with examples, how to...Ch. 1.1 - The differential equation x(y)2 4y 12x3 = 0 has...Ch. 1.1 - Prob. 57ECh. 1.1 - Find a linear second-order differential equation...Ch. 1.1 - Prob. 59ECh. 1.1 - Prob. 60ECh. 1.1 - Consider the differential equation dy/dx = y(a ...Ch. 1.1 - Consider the differential equation y = y2 + 4. (a)...Ch. 1.2 - In Problems 1 and 2, y = 1/(1 + c1ex) is a...Ch. 1.2 - In Problems 1 and 2, y = 1/(1 + c1ex) is a...Ch. 1.2 - In Problems 36, y = 1/(x2 + c) is a one-parameter...Ch. 1.2 - In Problems 36, y = 1/(x2 + c) is a one-parameter...Ch. 1.2 - In Problems 36, y = 1/(x2 + c) is a one-parameter...Ch. 1.2 - In Problems 36, y = 1/(x2 + c) is a one-parameter...Ch. 1.2 - In Problems 710, x = c1 cos t + c2 sin t is a...Ch. 1.2 - Prob. 8ECh. 1.2 - In Problems 710, x = c1 cos t + c2 sin t is a...Ch. 1.2 - In Problems 710, x = c1 cos t + c2 sin t is a...Ch. 1.2 - In Problems 1114, y = c1ex + c2ex is a...Ch. 1.2 - In Problems 1114, y = c1ex + c2ex is a...Ch. 1.2 - In Problems 1114, y = c1ex + c2ex is a...Ch. 1.2 - In Problems 1114, y = c1ex + c2ex is a...Ch. 1.2 - In Problems 15 and 16 determine by inspection at...Ch. 1.2 - In Problems 15 and 16 determine by inspection at...Ch. 1.2 - In Problems 1724 determine a region of the...Ch. 1.2 - In Problems 1724 determine a region of the...Ch. 1.2 - In Problems 1724 determine a region of the...Ch. 1.2 - In Problems 1724 determine a region of the...Ch. 1.2 - In Problems 1724 determine a region of the...Ch. 1.2 - In Problems 1724 determine a region of the...Ch. 1.2 - In Problems 1724 determine a region of the...Ch. 1.2 - In Problems 1724 determine a region of the...Ch. 1.2 - In Problems 2528 determine whether Theorem 1.2.1...Ch. 1.2 - In Problems 2528 determine whether Theorem 1.2.1...Ch. 1.2 - In Problems 2528 determine whether Theorem 1.2.1...Ch. 1.2 - In Problems 2528 determine whether Theorem 1.2.1...Ch. 1.2 - (a) By inspection find a one-parameter family of...Ch. 1.2 - (a) Verify that y = tan (x + c) is a one-parameter...Ch. 1.2 - (a) Verify that y = 1 /(x + c) is a one-parameter...Ch. 1.2 - (a) Show that a solution from the family in part...Ch. 1.2 - (a) Verify that 3x2 y2 = c is a one-parameter...Ch. 1.2 - (a) Use the family of solutions in part (a) of...Ch. 1.2 - In Problems 3538 the graph of a member of a family...Ch. 1.2 - In Problems 3538 the graph of a member of a family...Ch. 1.2 - In Problems 3538 the graph of a member of a family...Ch. 1.2 - In Problems 3538 the graph of a member of a family...Ch. 1.2 - In Problems 3944, y = c1 cos 2x + c2 sin 2x is a...Ch. 1.2 - In Problems 3944, y = c1 cos 2x + c2 sin 2x is a...Ch. 1.2 - In Problems 3944, y = c1 cos 2x + c2 sin 2x is a...Ch. 1.2 - In Problems 3944, y = c1 cos 2x + c2 sin 2x is a...Ch. 1.2 - In Problems 3944, y = c1 cos 2x + c2 sin 2x is a...Ch. 1.2 - In Problems 3944, y = c1 cos 2x + c2 sin 2x is a...Ch. 1.2 - Find a function whose graph at each point (x, y)...Ch. 1.2 - Prob. 46ECh. 1.2 - Consider the initial-value problem y = x 2y, y(0)...Ch. 1.2 - Show that x=0y1t3+1dt is an implicit solution of...Ch. 1.2 - Prob. 49ECh. 1.2 - Suppose that the first-order differential equation...Ch. 1.2 - The functions y(x)=116x4, x and...Ch. 1.3 - Under the same assumptions that underlie the model...Ch. 1.3 - The population model given in (1) fails to take...Ch. 1.3 - Using the concept of net rate introduced in...Ch. 1.3 - Modify the model in Problem 3 for net rate at...Ch. 1.3 - A cup of coffee cools according to Newtons law of...Ch. 1.3 - The ambient temperature Tm in (3) could be a...Ch. 1.3 - Suppose a student carrying a flu virus returns to...Ch. 1.3 - At a time denoted as t = 0 a technological...Ch. 1.3 - Suppose that a large mixing tank initially holds...Ch. 1.3 - Suppose that a large mixing tank initially holds...Ch. 1.3 - What is the differential equation in Problem 10,...Ch. 1.3 - Generalize the model given in equation (8) of this...Ch. 1.3 - Suppose water is leaking from a tank through a...Ch. 1.3 - The right-circular conical tank shown in Figure...Ch. 1.3 - A series circuit contains a resistor and an...Ch. 1.3 - A series circuit contains a resistor and a...Ch. 1.3 - For high-speed motion through the airsuch as the...Ch. 1.3 - A cylindrical barrel s feet in diameter of weight...Ch. 1.3 - After a mass m is attached to a spring, it...Ch. 1.3 - In Problem 19, what is a differential equation for...Ch. 1.3 - A small single-stage rocket is launched vertically...Ch. 1.3 - In Problem 21, the mass m(t) is the sum of three...Ch. 1.3 - By Newtons universal law of gravitation the...Ch. 1.3 - Suppose a hole is drilled through the center of...Ch. 1.3 - Learning Theory In the theory of learning, the...Ch. 1.3 - Forgetfulness In Problem 25 assume that the rate...Ch. 1.3 - Infusion of a Drug A drug is infused into a...Ch. 1.3 - Tractrix A motorboat starts at the origin and...Ch. 1.3 - Reflecting surface Assume that when the plane...Ch. 1.3 - Reread Problem 45 in Exercises 1.1 and then give...Ch. 1.3 - Prob. 31ECh. 1.3 - Prob. 32ECh. 1.3 - Prob. 33ECh. 1.3 - Rotating Fluid As shown in Figure 1.3.24(a), a...Ch. 1.3 - Prob. 35ECh. 1.3 - Prob. 36ECh. 1.3 - Let It snow The snowplow problem is a classic and...Ch. 1.3 - Population Dynamics Suppose that dP/dt = 0.15 P(t)...Ch. 1.3 - Radioactive Decay Suppose that dA/dt = 0.0004332...Ch. 1.3 - Reread this section and classify each mathematical...Ch. 1 - In Problems 1 and 2 fill in the blank and then...Ch. 1 - In Problems 1 and 2 fill in the blank and then...Ch. 1 - In Problems 3 and 4 fill in the blank and then...Ch. 1 - In Problems 3 and 4 fill in the blank and then...Ch. 1 - In Problems 5 and 6 compute y and y and then...Ch. 1 - In Problems 5 and 6 compute y and y and then...Ch. 1 - In Problems 712 match each of the given...Ch. 1 - In Problems 712 match each of the given...Ch. 1 - In Problems 712 match each of the given...Ch. 1 - In Problems 712 match each of the given...Ch. 1 - In Problems 712 match each of the given...Ch. 1 - In Problems 712 match each of the given...Ch. 1 - In Problems 13 and 14 determine by inspection at...Ch. 1 - In Problems 13 and 14 determine by inspection at...Ch. 1 - In Problems 15 and 16 interpret each statement as...Ch. 1 - In Problems 15 and 16 interpret each statement as...Ch. 1 - (a) Give the domain of the function y = x2/3. (b)...Ch. 1 - (a) Verify that the one-parameter family y2 2y =...Ch. 1 - The function y = x 2/x is a solution of the DE xy...Ch. 1 - Suppose that y(x) denotes a solution of the...Ch. 1 - A differential equation may possess more than one...Ch. 1 - What is the slope of the tangent line to the graph...Ch. 1 - In Problems 2326 verify that the indicated...Ch. 1 - In Problems 2326 verify that the indicated...Ch. 1 - In Problems 2326 verify that the indicated...Ch. 1 - In Problems 2326 verify that the indicated...Ch. 1 - In Problems 2730 use (12) of Section 1.1 to verify...Ch. 1 - In Problems 2730 use (12) of Section 1.1 to verify...Ch. 1 - In Problems 2730 use (12) of Section 1.1 to verify...Ch. 1 - In Problems 2730 use (12) of Section 1.1 to verify...Ch. 1 - In Problems 3134 verify that the indicated...Ch. 1 - In Problems 3134 verify that the indicated...Ch. 1 - In Problems 3134 verify that the indicated...Ch. 1 - In Problems 3134 verify that the indicated...Ch. 1 - In Problems 3538, y = c1e3x + c2ex 2x is a...Ch. 1 - In Problems 3538, y = c1e3x + c2ex 2x is a...Ch. 1 - In Problems 3538, y = c1e3x + c2ex 2x is a...Ch. 1 - In Problems 3538, y = c1e3x + c2ex 2x is a...Ch. 1 - The graph of a solution of a second-order...Ch. 1 - A tank in the form of a right-circular cylinder of...
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