# evaluate the function for the indicated values. f(x) = [x]. f(2.1)

evaluate the function for the indicated values. $$\displaystyle{f{{\left({x}\right)}}}={\left[{x}\right]}.{f{{\left({2.1}\right)}}}$$

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faldduE

[x] is known as the greatest integer function. its output is the greatest integer which is less than or equal to x. Therefore $$\displaystyle{f{{\left({2.1}\right)}}}={\left[{\left[{2.1}\right]}\right]}={2}.{f{{\left({2.1}\right)}}}={2}$$