Contact us
Choose a category below so we can get back to you as quickly as possible.
特徵方程:r²+8r+16=0 (r+4)²=0 r1=r2=-4 所以微分方程的通y=(C1+C2x)e^(-4x)
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.