求微分方程yy′′-y′2=0的通解.
令y′=p ,则y′′=p•dp/dy y•p•(dp/dy)-p2=0 即(1/p)dp=dy/y P=ecx ∴y=C2ec1x
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上一篇:Complete the following sentence with a (compound) word derived from the one(s) given in bracket. Write your word on the ANSWER SHEET.In the later period of the war, enemy planes began to ( ) the city even in the daytime. (bomb)
Complete the following sentence with a (compound) word derived from the one(s) given in bracket. Write your word on the ANSWER SHEET.
In the later period of the war, enemy planes began to ( ) the city even in the daytime. (bomb)
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