In Problems 11–16 verify that the
11.
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Chapter 8 Solutions
A First Course in Differential Equations with Modeling Applications (MindTap Course List)
- The matrix that projects onto the line y = -x is X 0.6 0.8 0.8 -0.6arrow_forwardWrite the given linear system without the use of matrices. (1)-(1)-·-(-)) -t + 2 e 2 X d - D y. dt 1 Z 8 dx dt dy dt dz dt || = )-(-3 1 -1 9 X -6 -2 5 y 3arrow_forwardHello, I need help with this Linear Alegebra problem. Thank you!arrow_forward
- Problem 16 (#2.3.34).Let f(x) = ax +b, and g(x) = cx +d. Find a condition on the constants a, b, c, d such that f◦g=g◦f. Proof. By definition, f◦g(x) = a(cx +d) + b=acx +ad +b, and g◦f(x) = c(ax +b) + d=acx +bc +d. Setting the two equal, we see acx +ad +b=acx +bc +d ad +b=bc +d (a−1)d=(c−1)b That last step was merely added for aesthetic reasons.arrow_forward(B. Janssen, KTH, 2014) Consider the linear system 0.550x+0.423y = 0.127 0.484x + 0.372y = 0.112 Suppose we are given two possible solutions, u = [_11] and v- -1.91. 1.01 0.9 a. Decide based on the residuals b - Au and b - Av which of the two possible solutions is the 'better' solution. b. Calculate the exact solution x. c. Compute the errors to the exact solution. That is, compute the infinity norms of u-x and v-x. Do the results change your answer to 7a?arrow_forwardQ.5 Linearize the non-linear system z = x² + 4xy + 6y² in the region defined as 8 ≤ x ≤ 10, 2 ≤ y ≤ 4. Find the error if the linearized equation is used to calculate value of z when x = 8 and y = 3.arrow_forward
- 35. The equations 2x – 3y + 4z = 1, 3x – y x + 2y – 4z = 1 = 2, A are linearly independent B are straight lines C are linearly dependent D have a unique solution.arrow_forwardFind the value of x if the matrix 1 5 4 is Singular 2 x. 6.arrow_forward15. If A=| B = 0 1 and C = 1 0 , then find the matrix (A v B) 0 carrow_forward
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