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For each function, calculate the derivative at a point using the limit definition

For each function, calculate the derivative at a point using the limit definition-example-1
User John Guan
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2 Answers

13 votes
13 votes
Each function is Gary okay
User Diepie
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24 votes
24 votes

Given:


f(x)=2x^2-3x

To determine the derivative using the limit definition, we follow the process shown below:


\begin{gathered} f(x)=2x^2-3x \\ f^(\prime)(x)=(2x^2)^(\prime)-(3x)^(\prime) \\ \text{Simplify} \\ =2(x^2)^(\prime)-(3x)^(\prime) \\ =2(2)x^(2-1)-3 \\ f^(\prime)(x)=4x-3 \end{gathered}

Next, we plug in x=0 into f'(x)=4x-3:


\begin{gathered} f^(\prime)(0)=4(0)-3 \\ \text{Simplify} \\ f^(\prime)(0)=-3 \end{gathered}

Therefore,


f^(\prime)(0)=-3

User IshanGarg
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