Math Problem Statement

Differentiate. y equals StartRoot e Superscript x Baseline plus 14 EndRoot

Solution

We need to differentiate the given function:

y=ex+14y = \sqrt{e^x + 14}

Step 1: Apply the chain rule

The square root can be rewritten as a power: y=(ex+14)12y = (e^x + 14)^{\frac{1}{2}}

Using the chain rule: dydx=12(ex+14)12ddx(ex+14)\frac{dy}{dx} = \frac{1}{2}(e^x + 14)^{-\frac{1}{2}} \cdot \frac{d}{dx}(e^x + 14)

Step 2: Differentiate the inner function

The derivative of ex+14e^x + 14 is: ddx(ex+14)=ex\frac{d}{dx}(e^x + 14) = e^x

Step 3: Combine the results

Substitute ddx(ex+14)\frac{d}{dx}(e^x + 14) into the expression: dydx=12(ex+14)12ex\frac{dy}{dx} = \frac{1}{2}(e^x + 14)^{-\frac{1}{2}} \cdot e^x

Step 4: Simplify the expression

The final derivative is: dydx=ex2ex+14\frac{dy}{dx} = \frac{e^x}{2\sqrt{e^x + 14}}

Let me know if you'd like further clarification or a detailed breakdown of any step.


Here are some follow-up questions you might explore:

  1. How would the differentiation change if 1414 was replaced with another function of xx?
  2. Can you integrate ex2ex+14\frac{e^x}{2\sqrt{e^x + 14}} back to verify the original function?
  3. What is the behavior of dydx\frac{dy}{dx} as xx \to \infty?
  4. What is the second derivative of y=ex+14y = \sqrt{e^x + 14}?
  5. How does the derivative change if the square root is replaced with a cube root?

Tip: Always rewrite roots and radicals as fractional exponents when applying differentiation rules—it simplifies the process!

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Math Problem Analysis

Mathematical Concepts

Differentiation
Exponential Functions
Chain Rule

Formulas

Chain rule: d/dx[f(g(x))] = f'(g(x)) * g'(x)
Derivative of e^x: d/dx[e^x] = e^x
Power rule for fractional exponents: d/dx[x^n] = n*x^(n-1)

Theorems

Chain Rule

Suitable Grade Level

Grades 11-12, College