# Difference between revisions of "P. 97, line -3"

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The equation should be | The equation should be | ||

− | <math>W(x_1,x_2)(t) = x_1(t) \dot x_2(t) - x_2(t) \dot x_1(t)</math> | + | <math>W(x_1,x_2)(t) = x_1(t) \dot x_2(t) - x_2(t) \dot x_1(t) \neq 0</math> |

[[Engineering Differential Equations: Theory and Applications, Springer 2010#Errata|Return to errata.]] | [[Engineering Differential Equations: Theory and Applications, Springer 2010#Errata|Return to errata.]] |