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Tuesday, July 2, 2013

3.2

Recall the statement from exercise 3.1c, however, instead of: \int_\mathbb{R}^d K_\delta (y) = 1 Write: (\dagger) For some particular C \in \mathbb{R}: \int_\mathbb{R}^d K_\delta (y) = C The new statement should read: \dagger \hspace{0.25cm} \Rightarrow (f*K_\delta)(x) \to Cf(x) \hspace{0.25cm} \text{as} \hspace{0.25cm} \delta \to 0 The argument follows identically to how the C=1 case is shown for approximations to the identity. Now, simply consider C = 0, and we're done.

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