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Evaluate the following function giving an value of x.

Evaluate the following function giving an value of x.-example-1
User Schad
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2 Answers

5 votes


\huge\text{Hey there!}



\mathsf{f(x) = 3x^3 - 5x - 4}\\\\\mathsf{f(x) = 3(2)^3 - 5(2) - 4}\\\\\mathsf{f(x) = 3(2^3) - 5(2) - 4}\\\\\mathsf{f(x) = 3(2*2*2) - 5(2) - 4}\\\\\mathsf{f(x) = 3(4*2) - 5(2) - 4}\\\\\mathsf{f(x) = 3(8) - 5(2) - 4}\\\\\mathsf{f(x) = 24 - 5(2) - 4}\\\\\mathsf{f(x) = 24 - 10 - 4}\\\\\mathsf{f(x) = 14 - 4}\\\\\mathsf{f(x) = 10}\\\\\\\huge\text{Therefore your answer should be:}\\\\\huge\boxed{\mathtt{f(x) = 10}}\huge\checkmark



\huge\text{Good luck on your assignment \& enjoy your day!}


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User Mcvities
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8.3k points
3 votes

Answer:


\large\boxed{\tt f(2) = 10}

Explanation:


\textsf{For this problem, we are asked to evaluate the function given x.}


\textsf{Note that because x is given, all that's needed to be done is substitution.}


\large\underline{\textsf{Substitute;}}


\tt f(2)= 3x^(3) -5x-4


\tt f(2)= 3(2)^(3) -5(2)-4


\large\underline{\textsf{Evalulate;}}


\tt f(2)= 3(2 * 2 * 2) -10-4


\tt f(2)= 3(8) -10-4


\tt f(2)= 24-14


\large\boxed{\tt f(2) = 10}

User Whitehawk
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