(adsbygoogle = window.adsbygoogle || []).push({}); 1. (D+1)(D-x)(2e^x+cosx)

2. None

3. (D+1)(D-x)(2e^x+cos(x))=D(2e^x-sinx-2xe^x-xcosx)+1(2e^x-sinx-2xe^x-xcosx)=-4e^x+2e^x-xcosx-2cosx+xsinx-sinx

The correct answer is 2e^x(xsinx-3sinx+2xcosx)

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# Homework Help: Simple Linear Differential Operator Problem

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