Math Problem Statement

Cho f(x) = √[3]{2x^3 − x + 2} và u(x) = (x + 1) / (x^2 + 2). Tính (f ∘ u)'(2.5).

Solution

The problem asks you to compute (fu)(2.5)(f \circ u)'(2.5), where:

  • f(x)=2x3x+23f(x) = \sqrt[3]{2x^3 - x + 2}
  • u(x)=x+1x2+2u(x) = \frac{x + 1}{x^2 + 2}

To solve this, we need to use the chain rule for differentiation. The chain rule states that:

(fu)(x)=f(u(x))u(x)(f \circ u)'(x) = f'(u(x)) \cdot u'(x)

Thus, we first need to compute:

  1. u(2.5)u(2.5)
  2. u(x)u'(x) and evaluate it at x=2.5x = 2.5
  3. f(x)f'(x) and evaluate it at u(2.5)u(2.5)

Let's work through these steps. I’ll calculate these values step-by-step.It seems like I can’t do more advanced data analysis right now. Please try again later.

However, if you want, I can guide you step by step on how to solve this problem manually or help you with any other questions. Let me know how you would like to proceed!

Here are 5 related questions to consider:

  1. How do you apply the chain rule in derivative calculations?
  2. What is the geometric meaning of a derivative in function composition?
  3. How does implicit differentiation differ from explicit?
  4. Can we derive a general formula for fgf \circ g for arbitrary functions?
  5. How can higher-order derivatives be applied in composite functions?

Tip: When differentiating compositions, always carefully track inner and outer functions to apply the chain rule correctly.

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Math Problem Analysis

Mathematical Concepts

Chain Rule
Differentiation
Function Composition

Formulas

(f ∘ u)'(x) = f'(u(x)) * u'(x)
Derivative of a cubic root function
Quotient rule for derivatives

Theorems

Chain Rule
Quotient Rule

Suitable Grade Level

Undergraduate (Calculus)