4. Given that $f(x) = \begin{cases} 2x - 1 & x \le -1 \\ x^2 + 2x - 1 & -1 < x < 1 \\ 3 - x & x \ge 1 \end{cases}$ \\ Evaluate the following \\ (a) $f \circ f(0)$ \\ (b) $f \circ f(1)$ \\ (c) $f(-1)$ \\ (d) $f(-2)$ \\ (e) $f(2)$
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f(0) = (0)^2 + 2(0) - 1 f(0) = 0 + 0 - 1 f(0) = -1 Show more…
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