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Given the function

[tex]\[ F(x) = \frac{e^{x^2 + 2x - 1}}{\sqrt{e^x - 1}} \][/tex]

Find the derivative [tex]\( F'(x) \)[/tex].


Sagot :

To solve for [tex]\( F(x) \)[/tex], we need to carefully analyze and combine the components within the specified function. Let's break down the function into manageable parts.

Given:
[tex]\[ F(x) = \frac{e^{x^2 + 2x - 1}}{\sqrt{e^x - 1}} \][/tex]

### Step-by-Step Solution:

1. Understand the Numerator [tex]\( e^{x^2 + 2x - 1} \)[/tex]:
- The numerator consists of the exponential function [tex]\( e \)[/tex] raised to the power of a quadratic polynomial [tex]\( x^2 + 2x - 1 \)[/tex].
- [tex]\( e^{x^2 + 2x - 1} \)[/tex] represents an exponential growth where the exponent is a parabola opening upwards (since the coefficient of [tex]\( x^2 \)[/tex] is positive).

2. Understand the Denominator [tex]\( \sqrt{e^x - 1} \)[/tex]:
- The denominator is the square root of the expression [tex]\( e^x - 1 \)[/tex].
- Note that [tex]\( e^x \)[/tex] grows exponentially, and subtracting 1 makes sure the argument inside the square root is shifted by 1 unit downwards.
- For the square root to be real and defined, [tex]\( e^x - 1 \)[/tex] must be greater than 0, i.e., [tex]\( e^x > 1 \)[/tex], which is true for [tex]\( x > 0 \)[/tex].

3. Combining the Numerator and Denominator:
- The entire function [tex]\( F(x) \)[/tex] is the quotient of these two expressions.
- [tex]\( F(x) \)[/tex] combines the exponential growth in the numerator with a square root function in the denominator, which impacts the overall growth rate of the function.

### Recap of the Expression:

Putting it all together, our function is:
[tex]\[ F(x) = \frac{e^{x^2 + 2x - 1}}{\sqrt{e^x - 1}} \][/tex]

This is the simplified form of [tex]\( F(x) \)[/tex], showing the interplay between exponential and square root components.

### Conclusion:

The function we're given is complex due to its mixture of exponential and square root functions. However, understanding it step-by-step allows us to appreciate how it grows and behaves. For all practical purposes, [tex]\( e^{x^2 + 2x - 1} \)[/tex] in the numerator grows very quickly for increasing [tex]\( x \)[/tex], while the denominator [tex]\( \sqrt{e^x - 1} \)[/tex] also increases, albeit at a different rate.

So the final function after evaluating or simplifying as much as possible is:
[tex]\[ F(x) = \frac{e^{x^2 + 2x - 1}}{\sqrt{e^x - 1}} \][/tex]
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