推 aoko1110:這題用參數變異法也可以做 另Yp=W1(X^2)+W2(exp(X)) 01/11 23:58
→ aoko1110:Yp微一次和兩次帶回 記得令W1'(X^2)+W2'(exp(X))=0 01/12 00:00
1.Consider the following general solution set of a DE
y=c1X^2+c2exp(X)
DE:y''+a1(x)y'+a0(x)y=f(x)
Find a1(x),a0(x),f(x)
想知道高手們有沒有什麼好想法可以提供?
感謝瞜!
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