Sketch trajectories of solutions of z? = Az given the eigenvalues and associated eigenvectors of A. Classify the origin and assess its stability.
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Multiply.(x - 3)(7x2 + x + 8)
A. 7x3 - 20x2 + 11x - 24 B. 7x3 - 22x2 + 5x - 24 C. 7x3 + 20x2 + 5x - 24 D. 7x3 - 20x2 + 5x - 24
Solve the problem.The area of a rectangular wall in a classroom is 210 square feet. Its length is 9 feet shorter than three times its width. Find the length and width of the wall of the classroom.
A. width = 10 ft; length = 21 ft B. width = 10 ft; length = 19 ft C. width = 10 ft; length = 39 ft D. width = 10 ft; length = 37 ft
Evaluate the expression without using a calculator. (Assume the variable represents a positive number.)
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Solve the problem.Suppose the annual sales of a particular brand of appliance are given by the linear function 
where f(x) represents the number of sales in year x, with x = 0 corresponding to 1982. Find the number of sales in 1993.
A. 4400 B. 4640 C. 9280 D. 9040