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Mathematics

OpenStudy (anonymous):

Are these differential functions linear?? y^4 + xy''' + xy'' -(e^x)y' + 2y = x^2 + x + 1 y'' + 2xy' + y = 4xy^2 Are these differential functions linear?? y^4 + xy''' + xy'' -(e^x)y' + 2y = x^2 + x + 1 y'' + 2xy' + y = 4xy^2 @Mathematics

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OpenStudy (agreene):

neither one is linear.

OpenStudy (anonymous):

ok, for the first one..its because of the y^4..rite? and I dont get why the second one is not linear..

OpenStudy (agreene):

all the rules are here: http://en.wikipedia.org/wiki/Linear_differential_equation I looked up the 2nd one to be sure on wolfram ;)

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