A=[-6e^(3t)sin(3t) 6e^(2t)cos(3t) -5e^(3t)cos(3t)

setup

2019-05-04 10:34:53

A=[-6e^(3t)sin(3t) 6e^(2t)cos(3t)
-5e^(3t)cos(3t) - 5e^(2t)sin(3t)]

математика 1031

sova

2019-05-04 13:52:39

★

det A=-6e^(3t)sin3t*(-5e^(2t)sin3t-(-5^(3t)*cos3t*6e^(2t)*cos3t)=

=30e^(5t)*(sin^23t+cos^23t)=30e^(5t)·1=30e^(5t)

Задача 36699 A=[-6e^(3t)sin(3t) 6e^(2t)cos(3t) ...