Math Problem Statement
y = x2 + 6x
at the point
(−2, −8)
by using the following parameters.
Solution
It looks like you're asking to evaluate or analyze the function at the point using some parameters, though the parameters weren't mentioned in your message.
We can proceed with the following steps if the task is to confirm whether is on the curve, or find derivatives, tangent lines, or other parameters at that point. Here's a breakdown:
Step 1: Check if is on the curve.
We'll plug into the equation and see if the result equals .
Given: Substitute :
= 4 - 12 = -8$$ So, the point $$(-2, -8)$$ is on the curve. ### Step 2: Derivative of the function $$y = x^2 + 6x$$ The derivative represents the slope of the tangent line at any point on the curve. Using basic rules of differentiation: $$\frac{dy}{dx} = 2x + 6$$ Now substitute $$x = -2$$ into the derivative: $$\frac{dy}{dx} = 2(-2) + 6 = -4 + 6 = 2$$ Thus, the slope of the tangent line at $$(-2, -8)$$ is 2. ### Step 3: Equation of the tangent line at $$(-2, -8)$$ The slope of the tangent line is 2, and it passes through the point $$(-2, -8)$$. The equation of the tangent line is given by: $$y - y_1 = m(x - x_1)$$ Where $$m$$ is the slope and $$(x_1, y_1) = (-2, -8)$$. Substitute the values: $$y - (-8) = 2(x - (-2))$$ Simplifying: $$y + 8 = 2(x + 2)$$ $$y + 8 = 2x + 4$$ $$y = 2x - 4$$ Thus, the equation of the tangent line at $$(-2, -8)$$ is $$y = 2x - 4$$. ### Summary: 1. The point $$(-2, -8)$$ is on the curve. 2. The derivative (slope of the tangent line) at $$(-2, -8)$$ is 2. 3. The equation of the tangent line at $$(-2, -8)$$ is $$y = 2x - 4$$. Would you like more details on any of the steps or have other questions? Here are five related questions: 1. How do we find the second derivative of the function? 2. How do we calculate the normal line at $$(-2, -8)$$? 3. What is the concavity of the function near the point $$(-2, -8)$$? 4. How do we find the y-intercept of the tangent line? 5. What is the slope of the curve at different values of $$x$$? **Tip**: The first derivative gives the slope of the tangent line, while the second derivative reveals the concavity (how the curve bends) at a point.Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Algebra
Quadratic Functions
Derivatives
Tangent Line
Formulas
Quadratic function: y = x^2 + 6x
Derivative: dy/dx = 2x + 6
Tangent line: y - y1 = m(x - x1)
Theorems
Differentiation
Slope of the Tangent Line
Equation of a Line
Suitable Grade Level
Grades 10-12