Differentiate: f(x) = (x)(√(x^2+5))

In summary, the problem asks to differentiate the function f(x) = x√(x^2+5). The first step is to rewrite the function as (x)(x^2+5)^1/2. Then, using the product rule, we find that f'(x) = (x^2+5)^1/2 + x(x^2+5)^-1/2(2x). Simplifying further, we get f'(x) = (x^2+5)^1/2 + (2x^2)/(x^2+5)^1/2. However, there is a mistake in the next line, where the correct answer should be (x^2)/(x^
  • #1
Nawz
32
0

Homework Statement



Differentiate.

f(x) = (x) (square root of (x2+5))

Homework Equations





The Attempt at a Solution



f(x) = (x) (square root of (x2+5))

=(x)(x2+5)1/2

f'(x)=(x)1/2(x2+5)-1/2(2x)+(1)(x2+5)

=x3/(x2+5)1/2+(x2+5)1/2

I'm having problems simplifying. The answer in the back of the book is 2x^2 + 5 / Square root of x^2+5..
 
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  • #2
Nawz said:

Homework Statement



Differentiate.

f(x) = (x) (square root of (x2+5))

Homework Equations





The Attempt at a Solution



f(x) = (x) (square root of (x2+5))

=(x)(x2+5)1/2

f'(x)=(x)1/2(x2+5)-1/2(2x)+(1)(x2+5)
The above is correct, but you made a mistake in the next line.
Nawz said:
=x3/(x2+5)1/2+(x2+5)1/2
This should be [tex]\frac{x^2}{(x^2 + 5)^{1/2}} + (x^2 + 5)^{1/2}[/tex]

You can take a factor of 1/(x2 + 5)1/2 from both terms above.
Nawz said:
I'm having problems simplifying. The answer in the back of the book is 2x^2 + 5 / Square root of x^2+5..
 
  • #3
Thank You! Thank You!
 

1. What is the purpose of differentiating a problem?

Differentiating a problem allows us to break down a complex issue into smaller, more manageable parts. This makes it easier to understand and solve the problem by addressing each component individually.

2. How is problem differentiation different from problem solving?

Problem differentiation involves analyzing and breaking down a problem into its various components, while problem solving is the process of finding a solution to the problem. Differentiation is a crucial step in the problem solving process as it helps us understand the problem better and come up with more effective solutions.

3. What techniques can be used to differentiate a problem?

There are several techniques that can be used to differentiate a problem, including brainstorming, root cause analysis, fishbone diagrams, and mind mapping. These techniques help us break down a problem into its various elements and identify potential causes and solutions.

4. Why is problem differentiation important in scientific research?

In scientific research, problem differentiation is important because it allows us to clearly define and understand the problem we are trying to solve. This helps us design more effective experiments and develop more accurate conclusions based on the data we collect.

5. Can problem differentiation be used in everyday life?

Yes, problem differentiation can be applied in everyday life to help us better understand and solve problems in various aspects such as personal relationships, work, and decision making. By breaking down a problem into smaller parts, we can approach it more systematically and find more effective solutions.

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