4. Use implicit differentiation to find the equation of the tangent line of the following functions at the given point: 2x – 3y- 3= 2y at (2,1)

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Chapter1: Functions And Models
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Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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### Implicit Differentiation and Equation of Tangent Line

**Problem Statement:**

4. Use implicit differentiation to find the equation of the tangent line of the following function at the given point:

\[ 2x^2 - 3y - 3 = 2y^4 \]

At the point \((2, 1)\).

**Solution Outline:**

To find the equation of the tangent line using implicit differentiation, follow these steps:

1. **Differentiate Both Sides Implicitly:**

   - Differentiate each term with respect to \(x\). 
   - Apply the chain rule for the terms involving \(y\) since \(y\) is a function of \(x\). 

2. **Apply the Chain Rule:**

   - For terms like \(2y^4\), you'll need to multiply by \(\frac{dy}{dx}\) because \(y\) is implicitly a function of \(x\).

3. **Solve for \(\frac{dy}{dx}\):**

   - Collect all terms involving \(\frac{dy}{dx}\) on one side and factor it out.
   - Solve for \(\frac{dy}{dx}\) to find the slope of the tangent line.

4. **Substitute the Given Point \((2, 1)\):**

   - Plug the coordinates of the point into your equation for \(\frac{dy}{dx}\) to find the slope at that point.

5. **Equation of the Tangent Line:**

   - Use the point-slope form of the equation of a line:
     
     \[ y - y_1 = m(x - x_1) \]

   Where \((x_1, y_1)\) is the given point and \(m\) is the slope found from \(\frac{dy}{dx}\).

**Diagram Explanation:**

Although this task does not include a diagram, typically you would graph the curve represented by the equation and draw the tangent line at the point \((2, 1)\) to visually confirm your result. The slope of the tangent should match the slope you've calculated.
Transcribed Image Text:### Implicit Differentiation and Equation of Tangent Line **Problem Statement:** 4. Use implicit differentiation to find the equation of the tangent line of the following function at the given point: \[ 2x^2 - 3y - 3 = 2y^4 \] At the point \((2, 1)\). **Solution Outline:** To find the equation of the tangent line using implicit differentiation, follow these steps: 1. **Differentiate Both Sides Implicitly:** - Differentiate each term with respect to \(x\). - Apply the chain rule for the terms involving \(y\) since \(y\) is a function of \(x\). 2. **Apply the Chain Rule:** - For terms like \(2y^4\), you'll need to multiply by \(\frac{dy}{dx}\) because \(y\) is implicitly a function of \(x\). 3. **Solve for \(\frac{dy}{dx}\):** - Collect all terms involving \(\frac{dy}{dx}\) on one side and factor it out. - Solve for \(\frac{dy}{dx}\) to find the slope of the tangent line. 4. **Substitute the Given Point \((2, 1)\):** - Plug the coordinates of the point into your equation for \(\frac{dy}{dx}\) to find the slope at that point. 5. **Equation of the Tangent Line:** - Use the point-slope form of the equation of a line: \[ y - y_1 = m(x - x_1) \] Where \((x_1, y_1)\) is the given point and \(m\) is the slope found from \(\frac{dy}{dx}\). **Diagram Explanation:** Although this task does not include a diagram, typically you would graph the curve represented by the equation and draw the tangent line at the point \((2, 1)\) to visually confirm your result. The slope of the tangent should match the slope you've calculated.
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