too young歌詞

《Too Young》的歌詞如下：

Verse 1：

I remember when we met

You were so young and beautiful

I fell in love with your innocence

But now I feel like I've been cheated

Chorus：

Too young to understand

The pain of losing your love

Too young to feel the loss

But I'll remember your touch

Verse 2：

I remember how you smiled

You had such a bright future ahead

But now I know you're gone forever

And I still can't let it go

Chorus：

Too young to understand

The pain of losing your love

Too young to feel the loss

But I'll remember your touch

Bridge：

I hope that one day you'll come back to me

And take my hand and we'll never be apart

But until then I'll just have to live with the memories

Of how you left too soon and never returned

Chorus：

Too young to understand

The pain of losing your love

Too young to feel the loss

But I still miss you so much

Outro：

Too young to understand what love was

Now I know it's gone forever

But I'll always remember you求解下列微分方程：y''-y'-2y=0，並求通解。

解：將原微分方程化簡為 dy/dx = 2y + y'，這是一個一階線性微分方程。

根據一階線性微分方程的通解公式，得通解為 y = C1e^x + C2e^-x。其中C1和C2為任意常數。

由於原微分方程中的常數項係數為-2，所以需要在通解中添加一個符合條件的常數項。由於該常數項可能不為零，所以原微分方程無法直接求解通解。但是可以通過代入法求出特解。令特解為 y = ae^(2x)，將此特解代入原微分方程得到 3ae^(2x) = 0，得常數項a=0。此時通解為 y = C1e^x + C2e^(-x)。所以，原微分方程的通解為 y = C1e^x + C2e^(-x)。