If ,y= show that
Last edited by srirahulan; Jul 6th 2013 at 07:35 PM.
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It doesn't... Now let , then Now remembering that that means , and so , NOT .
Hello, srirahulan! We have: . Then: . Hence: . From [1], we have: . Substitute into [2]: . . . . . . . Therefore: .
It appears I am unable to edit my previous post. I for some reason forgot that the second derivative is , not .
Another way is: We can write as . Now differentiate both sides: Cancelling on both sides, we get . Differentiating this equation we get, .
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