Suppose that the three numbers r,, 12, and r3 are distinct. Show that the three functions exp (r,x), exp (12x), and exp (r3x) are linearly independent by showing that their Wronskian given below is nonzero for all x. 1 1 1 W= exp [(1 +12+r3)x]* 1 If y1. Y2. y, are n solutions of the homogeneous nth-order linear equation y) + p, (x)y" + Pn - 1(x)y'+P (x)y = 0 on an open interval I, where each p, is continuous. Then the Wronskian is W = W(y,, y2, .., yn). If y,, y2. ... yn are linearly independent, then W#0 at each point of I. To simplify W, evaluate the determinant. W= exp [(1 +12 +r3)*]•O
Suppose that the three numbers r,, 12, and r3 are distinct. Show that the three functions exp (r,x), exp (12x), and exp (r3x) are linearly independent by showing that their Wronskian given below is nonzero for all x. 1 1 1 W= exp [(1 +12+r3)x]* 1 If y1. Y2. y, are n solutions of the homogeneous nth-order linear equation y) + p, (x)y" + Pn - 1(x)y'+P (x)y = 0 on an open interval I, where each p, is continuous. Then the Wronskian is W = W(y,, y2, .., yn). If y,, y2. ... yn are linearly independent, then W#0 at each point of I. To simplify W, evaluate the determinant. W= exp [(1 +12 +r3)*]•O
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.1: Inverse Functions
Problem 56E
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