Math Problem Statement

what is the derivative of (2x-7)^3 * (x^2-3x-2)^3

Solution

To differentiate (2x7)3(x23x2)3(2x - 7)^3 \cdot (x^2 - 3x - 2)^3, we will apply the product rule and chain rule.

Step-by-Step Solution:

Let: u=(2x7)3andv=(x23x2)3u = (2x - 7)^3 \quad \text{and} \quad v = (x^2 - 3x - 2)^3

The product rule for derivatives is: ddx[uv]=uv+uv\frac{d}{dx}[u \cdot v] = u' \cdot v + u \cdot v' Thus, we need to find uu' and vv'.

1. Differentiate u=(2x7)3u = (2x - 7)^3:

Using the chain rule: u=3(2x7)2ddx(2x7)=3(2x7)22=6(2x7)2u' = 3(2x - 7)^2 \cdot \frac{d}{dx}(2x - 7) = 3(2x - 7)^2 \cdot 2 = 6(2x - 7)^2

2. Differentiate v=(x23x2)3v = (x^2 - 3x - 2)^3:

Again using the chain rule: v=3(x23x2)2ddx(x23x2)=3(x23x2)2(2x3)v' = 3(x^2 - 3x - 2)^2 \cdot \frac{d}{dx}(x^2 - 3x - 2) = 3(x^2 - 3x - 2)^2 \cdot (2x - 3)

3. Apply the product rule:

Now, substitute these results into the product rule: ddx[(2x7)3(x23x2)3]=uv+uv\frac{d}{dx} \left[ (2x - 7)^3 \cdot (x^2 - 3x - 2)^3 \right] = u'v + uv' This becomes: =6(2x7)2(x23x2)3+(2x7)33(x23x2)2(2x3)= 6(2x - 7)^2 \cdot (x^2 - 3x - 2)^3 + (2x - 7)^3 \cdot 3(x^2 - 3x - 2)^2 \cdot (2x - 3)

Final Answer:

ddx[(2x7)3(x23x2)3]=6(2x7)2(x23x2)3+3(2x7)3(x23x2)2(2x3)\frac{d}{dx} \left[ (2x - 7)^3 \cdot (x^2 - 3x - 2)^3 \right] = 6(2x - 7)^2 (x^2 - 3x - 2)^3 + 3(2x - 7)^3 (x^2 - 3x - 2)^2 (2x - 3)

Would you like me to simplify the expression further, or do you have any questions about this solution?

Relative Questions:

  1. How does the chain rule work in differentiation?
  2. What is the product rule, and how is it applied?
  3. Can you explain the difference between uu' and vv' in the product rule?
  4. How do you simplify a derivative expression?
  5. What happens if one of the functions in the product rule is constant?

Tip: In any derivative involving products or compositions of functions, it’s essential to carefully apply the product rule and chain rule to avoid errors.

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Math Problem Analysis

Mathematical Concepts

Differentiation
Product Rule
Chain Rule
Polynomial Functions

Formulas

Product rule: d/dx[u * v] = u' * v + u * v'
Chain rule: d/dx[f(g(x))] = f'(g(x)) * g'(x)

Theorems

Product Rule
Chain Rule

Suitable Grade Level

Grades 11-12 or early college (Calculus)