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Real Valued Functions

If fx=x3-2x...

Question

If $f (x) = x^{3} - 2 x^{2} + 3$ Find $f (3)$

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Solution

$f (x) = x^{3} - 2 x^{2} + 3 f (3) = 3^{3} - 23^{2} + 3 f (3) = 27 - 2 (9) + 3 f (3) = 27 - 18 + 3 f (3) = 12$

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f (x) = x^{3} - 3 x^{2} + 5

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