Solution: Quotient Rule #4
Solution: Quotient Rule #4
Find the derivative of:
[latex]y = \Large{\frac{\sqrt{x}}{2x+1}}[/latex]
Step 1:
We notice that the given function is a quotient of two other functions. To find the derivative of this, we can use the quotient rule. First, let’s label the two functions as:
[latex]\large{f(x) = \sqrt{x}}[/latex] and [latex]\large{g(x) = 2x+1}[/latex]
To use the quotient rule, we also need the derivative of these functions. We can easily find the derivatives as:
[latex]\large{f'(x) = \frac{1}{2\sqrt{x}}}[/latex] and [latex]\large{g'(x) = 2}[/latex]
Step 2:
The quotient rule formula states that:
[latex]\large{\frac{d}{dx}\frac{f(x)}{g(x)} = \frac{g(x)f'(x) – f(x)g'(x)}{g(x)^2}}[/latex]
Thus, substituting into the quotient rule formula, we have:
[latex]\large{\frac{d}{dx}(\frac{\sqrt{x}}{2x+1}) = \frac{(2x+1)(\frac{1}{2\sqrt{x}}) \:- \:(\sqrt{x})(2)}{(2x+1)^2}}[/latex]
Step 3:
Simplifying, we have:
[latex]\Large{ = \frac{\frac{2x+1}{2\sqrt{x}}\: -\: 2\sqrt{x}}{(2x+1)^2}}[/latex]
Now, we can simplify the numerator as shown:
[latex]\Large{ = \frac{\frac{2x+1}{2\sqrt{x}}\: -\: \frac{2\sqrt{x}(2\sqrt{x})}{2\sqrt(x)}}{(2x+1)^2}}[/latex]
[latex]\Large{ = \frac{\frac{-2x+1}{2\sqrt{x}}}{(2x+1)^2}}[/latex]
[latex]\Large{= \frac{-2x+1}{2\sqrt{x}(2x+1)^2}}[/latex]
Thus, this is the final answer for the derivative. So:
[latex]\Large{\frac{dy}{dx}= \frac{-2x+1}{2\sqrt{x}(2x+1)^2}}[/latex]
Solution Complete!
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Solution: Quotient Rule #4
Find the derivative of:
[latex]y = \Large{\frac{\sqrt{x}}{2x+1}}[/latex]
Step 1:
We notice that the given function is a quotient of two other functions. To find the derivative of this, we can use the quotient rule. First, let’s label the two functions as:
[latex]\large{f(x) = \sqrt{x}}[/latex] and [latex]\large{g(x) = 2x+1}[/latex]
To use the quotient rule, we also need the derivative of these functions. We can easily find the derivatives as:
[latex]\large{f'(x) = \frac{1}{2\sqrt{x}}}[/latex] and [latex]\large{g'(x) = 2}[/latex]
Step 2:
The quotient rule formula states that:
[latex]\large{\frac{d}{dx}\frac{f(x)}{g(x)} = \frac{g(x)f'(x) – f(x)g'(x)}{g(x)^2}}[/latex]
Thus, substituting into the quotient rule formula, we have:
[latex]\large{\frac{d}{dx}(\frac{\sqrt{x}}{2x+1}) = \frac{(2x+1)(\frac{1}{2\sqrt{x}}) \:- \:(\sqrt{x})(2)}{(2x+1)^2}}[/latex]
Step 3:
Simplifying, we have:
[latex]\Large{ = \frac{\frac{2x+1}{2\sqrt{x}}\: -\: 2\sqrt{x}}{(2x+1)^2}}[/latex]
Now, we can simplify the numerator as shown:
[latex]\Large{ = \frac{\frac{2x+1}{2\sqrt{x}}\: -\: \frac{2\sqrt{x}(2\sqrt{x})}{2\sqrt(x)}}{(2x+1)^2}}[/latex]
[latex]\Large{ = \frac{\frac{-2x+1}{2\sqrt{x}}}{(2x+1)^2}}[/latex]
[latex]\Large{= \frac{-2x+1}{2\sqrt{x}(2x+1)^2}}[/latex]
Thus, this is the final answer for the derivative. So:
[latex]\Large{\frac{dy}{dx}= \frac{-2x+1}{2\sqrt{x}(2x+1)^2}}[/latex]
Solution Complete!
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