Math Problem Statement

Derivatives of cube root of x

Solution

The function you want to differentiate is the cube root of xx, which can be expressed as:

f(x)=x3=x1/3f(x) = \sqrt[3]{x} = x^{1/3}

To find the derivative of this function, we use the power rule for derivatives. The power rule states that for any function xnx^n, its derivative is given by:

ddx(xn)=nxn1\frac{d}{dx}(x^n) = n x^{n-1}

Applying this rule to f(x)=x1/3f(x) = x^{1/3}:

f(x)=13x1/31=13x2/3f'(x) = \frac{1}{3} x^{1/3 - 1} = \frac{1}{3} x^{-2/3}

Thus, the derivative of f(x)=x3f(x) = \sqrt[3]{x} is:

f(x)=13x2/3=13x23f'(x) = \frac{1}{3} x^{-2/3} = \frac{1}{3 \sqrt[3]{x^2}}

Would you like more details or have any other questions?

Here are 5 related questions you can explore:

  1. What is the second derivative of f(x)=x3f(x) = \sqrt[3]{x}?
  2. How do you compute the derivative of f(x)=x23f(x) = \sqrt[3]{x^2}?
  3. How do you differentiate f(x)=xm/nf(x) = x^{m/n} for any general rational power?
  4. Can you apply the chain rule to differentiate g(x)3\sqrt[3]{g(x)}?
  5. How do you compute the derivative of implicit functions involving cube roots?

Tip: When dealing with fractional powers, always check if applying logarithmic differentiation simplifies the process.

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Math Problem Analysis

Mathematical Concepts

Calculus
Derivatives
Power Rule

Formulas

f(x) = x^{1/3}
f'(x) = n x^{n-1}
f'(x) = \frac{1}{3} x^{-2/3} = \frac{1}{3 \sqrt[3]{x^2}}

Theorems

Power Rule for Derivatives

Suitable Grade Level

Grades 11-12, Introductory College Calculus