The question is: If find as a function of x.
I differentiated once to get
Then again to get
The book's answer is . So I guess that means . But I duno why.
Did I make a mistake? Can anyone help? Thanks.
The question is: If find as a function of x.
I differentiated once to get
Then again to get
The book's answer is . So I guess that means . But I duno why.
Did I make a mistake? Can anyone help? Thanks.