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The Chain Rule

The Chain Rule. Section 3.6c. Suppose that functions f and g and their derivatives have the f ollowing values at x = 2 and x = 3. 2. 8. 2. 1/3. –3. 3. 3. –4. 5. Evaluate the derivatives with respect to x of the following c ombinations at the given value of x . (a).

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The Chain Rule

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  1. The Chain Rule Section 3.6c

  2. Suppose that functions f and g and their derivatives have the following values at x = 2 and x = 3. 2 8 2 1/3 –3 3 3 –4 5 Evaluate the derivatives with respect to x of the following combinations at the given value of x. (a) at x = 2 At x = 2:

  3. Suppose that functions f and g and their derivatives have the following values at x = 2 and x = 3. 2 8 2 1/3 –3 3 3 –4 5 Evaluate the derivatives with respect to x of the following combinations at the given value of x. (b) at x = 3 At x = 3:

  4. Suppose that functions f and g and their derivatives have the following values at x = 2 and x = 3. 2 8 2 1/3 –3 3 3 –4 5 Evaluate the derivatives with respect to x of the following combinations at the given value of x. (c) at x = 3 At x = 3:

  5. Suppose that functions f and g and their derivatives have the following values at x = 2 and x = 3. 2 8 2 1/3 –3 3 3 –4 5 Evaluate the derivatives with respect to x of the following combinations at the given value of x. (d) at x = 2

  6. Suppose that functions f and g and their derivatives have the following values at x = 2 and x = 3. 2 8 2 1/3 –3 3 3 –4 5 Evaluate the derivatives with respect to x of the following combinations at the given value of x. (e) at x = 2

  7. Suppose that functions f and g and their derivatives have the following values at x = 2 and x = 3. 2 8 2 1/3 –3 3 3 –4 5 Evaluate the derivatives with respect to x of the following combinations at the given value of x. (f) at x = 2

  8. Suppose that functions f and g and their derivatives have the following values at x = 2 and x = 3. 2 8 2 1/3 –3 3 3 –4 5 Evaluate the derivatives with respect to x of the following combinations at the given value of x. (g) at x = 3

  9. Suppose that functions f and g and their derivatives have the following values at x = 2 and x = 3. 2 8 2 1/3 –3 3 3 –4 5 Evaluate the derivatives with respect to x of the following combinations at the given value of x. (h) at x = 2

  10. Suppose that functions f and g and their derivatives have the following values at x = 2 and x = 3. 2 8 2 1/3 –3 3 3 –4 5 Evaluate the derivatives with respect to x of the following combinations at the given value of x. (h) at x = 2

  11. Slopes of Parametrized Curves A parametrized curve (x(t), y(t)) is differentiable at t if x and y are differentiable at t. At a point on a differentiable parametrized curve where y is also a differentiable function of x, the derivatives dy/dt, dx/dt, and dy/dx are related by the Chain Rule: Usually, we write this in a different form… If all three derivatives exist and ,

  12. Practice Problems Find the equation of the line tangent to the curve at the point defined by the given value of t. Find the three derivatives:

  13. Practice Problems Find the equation of the line tangent to the curve at the point defined by the given value of t. The line passes through: And has slope: Equation of the tangent line:

  14. Practice Problems Find the equation of the line tangent to the curve at the point defined by the given value of t. Derivatives: Slope: Point: Equation of the tangent line:

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