UPSKILL MATH PLUS
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Learn more(i) If \(f(x) = x^2 - 1\), \(g(x) = x - 2\) find \(a\), if \(g \circ f(a) = 1\).
The value of \(a\) \(=\)
(ii) Find \(k\), if \(f(k) = 2k - 1\) and \(f \circ f(k) = 5\).
The value of \(k\) \(=\)
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