Class 9 Homework-

Consider the initial value problem

\(y'(t)=f(y(t)),y(0)=a\in \mathbb{R}\)

 Which of the following statements are necessarily true?

(a) There exists a continuous function\(f:\mathbb{R}\rightarrow \mathbb{R}\)  and \(a\in\mathbb{R}\) such that the above problem does not have a solution in any neighbourhood of 0.

(b) The problem has a unique solution for every \(a\in\mathbb{R}\), when f is Lipschitz continuous.

(c) When is twice continuously differentiable, the maximal interval of existence for the above initial value problem is \(\mathbb{R}\).

(d) The maximal interval of existence for the above problem is\(\mathbb{R}\), when is bounded and continuously differentiable.




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