Find the range of the following functions: \text { (a) } f: \mathbb{R} \rightarrow \mathbb{R} \text { defined by } f(x)=x^{2}-4 x+5, \forall x \in \mathbb{R} \text { (b) } g: \mathbb{R} \rightarrow \mathbb{R} \text { defined by } g(x)=-|x-7|, \forall x \in \mathbb{R} \text {; } \text { (c) } h: \mathbb{R} \rightarrow \mathbb{R} \text { defined by } h(x)=e^{4 \sin \left(x^{2}\right)}, \forall x \in \mathbb{R}

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