152k views
2 votes
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 Raghavan
by
3.1k points

2 Answers

3 votes
Each function is Gary okay
User Bachi
by
3.7k points
0 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 Creamsoup
by
3.1k points