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Concept explainers
Consider the equation
a. Show that the equation is not exact.
b. Multiply the equation by
c. Use the solution of the resulting exact equation to solve the original equation.
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Chapter 2 Solutions
Fundamentals of Differential Equations and Boundary Value Problems
- 21. First-Order Constant-Coefficient Equations. a. Substituting y = ert, find the auxiliary equation for the first-order linear equation ay+by = 0, where a and b are constants with a 0. b. Use the result of part (a) to find the general solution.arrow_forwardPlane II is spanned by the vectors: - (2) · P² - (4) P1=2 P21 3 Subspace W is spanned by the vectors: 2 W1 - (9) · 1 W2 1 = (³)arrow_forwardshow that v3 = (−√3, −3, 3)⊤ is an eigenvector of M3 . Also here find the correspondingeigenvalue λ3 . Just from looking at M3 and its components, can you say something about the remaining twoeigenvalues? If so, what would you say? find v42 so that v4 = ( 2/5, v42, 1)⊤ is an eigenvector of M4 with corresp. eigenvalue λ4 = 45arrow_forward
- 2) Suppose we select two values x and y independently from the uniform distribution on [0,1]. What is the probability that xy 1 2arrow_forwardNo chatgpt pls will upvote Already got wrong chatgpt answerarrow_forwardYour employer automatically puts 5 percent of your salary into a 401(k) retirement account each year. The account earns 10% interest. Suppose you just got the job, your starting salary is $60000, and you expect to receive a 2.5% raise each year. For simplicity, assume that interest earned and your raises are given as nominal rates and compound continuously. Find the value of your retirement account after 20 yearsarrow_forward
- Compute the principal values of i¹² (i — 1)² and (i(i − 1))². - -arrow_forward1 2 3 Consider the matrix A = 0 4 5. Give an example of 006 (a) a nonzero matrix B for which det(A + B) = det(A) + det(B); (b) a matrix C for which det(A+C)det(A) + det(C).arrow_forwardFind all points at which f(z) = y² sin x + iy is analytic.arrow_forward
- Find all the values of 1-i.arrow_forward1. e² = 1+i. 2. cos z=3+ 4i Determine all complex numbers z such thatarrow_forward08:34 ◄ Classroom 07:59 Probs. 5-32/33 D ا. 89 5-34. Determine the horizontal and vertical components of reaction at the pin A and the normal force at the smooth peg B on the member. A 0,4 m 0.4 m Prob. 5-34 F=600 N fr th ar 0. 163586 5-37. The wooden plank resting between the buildings deflects slightly when it supports the 50-kg boy. This deflection causes a triangular distribution of load at its ends. having maximum intensities of w, and wg. Determine w and wg. each measured in N/m. when the boy is standing 3 m from one end as shown. Neglect the mass of the plank. 0.45 m 3 marrow_forward
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