Web Reference: Given f : {whole numbers} → {whole numbers}. The function f accepts a whole number and returns the square of the smallest place value digit in the number. [Hint: smallest place value digit in 34 is 3.] a) Find the domain of f. b) Find the range of f. c) Find f (24). d) Find f (854). e) Find f (0). f) For what value of x is f (x) = 49? 7. While the notation and wording is different, the process of evaluating a function is the same as evaluating an equation: in both cases, you substitute 2 for x, multiply it by 4 and add 1, simplifying to get 9. How do you evaluate functions? The same way that you substitute values into equations! Example 1 What is the value of $$ x $$ given the equation $$ y = 2x $$ when $$ x = 5 $$? Substitute '5' in for x : The one new aspect of function notation is the emphasis on input and output .
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