Questions: Find the slope of the tangent line to the graph of the function at the given point.
f(x)=3 x^2-6, (2,6)
Transcript text: Find the slope of the tangent line to the graph of the function at the given point.
\[
f(x)=3 x^{2}-6, \quad(2,6)
\]
Solution
Solution Steps
To find the slope of the tangent line to the graph of the function at a given point, we need to compute the derivative of the function and then evaluate it at the given x-coordinate of the point. The derivative of a function gives us the slope of the tangent line at any point on the function.
Step 1: Define the Function
The function given is \( f(x) = 3x^2 - 6 \).
Step 2: Compute the Derivative
To find the slope of the tangent line, we first need to compute the derivative of the function. The derivative of \( f(x) = 3x^2 - 6 \) with respect to \( x \) is:
\[
f'(x) = \frac{d}{dx}(3x^2 - 6) = 6x
\]
Step 3: Evaluate the Derivative at the Given Point
We need to find the slope of the tangent line at the point \( (2, 6) \). To do this, we evaluate the derivative at \( x = 2 \):
\[
f'(2) = 6 \times 2 = 12
\]