Derivative of (2x^2 + 1)x^(1/2) using Product Rule | Homework Question

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SUMMARY

The derivative of the function y = (2x² + 1)x^(1/2) is calculated using the Product Rule. The correct derivative is expressed as (10x² + 1)/(2√x). The initial attempt at differentiation resulted in (4x^(3/2) + 2x² + 1)/(2√x), indicating an algebraic error in combining terms. The key to resolving the issue lies in correctly applying the Product Rule and simplifying the expression by finding a common denominator.

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Homework Statement


Find the derivative of y= (2x2 + 1) x1/2


Homework Equations


Product Rule

The Attempt at a Solution


After differentiating, I eventually get stuck at:
[tex]\frac{4x<sup>3/2</sup>+2x<sup>2</sup>+1}{2\sqrt{x}}[/tex]

The given solution is [tex]\frac{10x<sup>2</sup>+1}{2\sqrt{x}}[/tex]
 
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the problem is in your algebra, on the left you have, after differentiating, (x^1/2)4x, now when putting it over a common denom, you get 2x^1/2[(x^1/2)4x] which becomes 2x times 4x... from here i think u can finish it correctly
edit: or the way you've done it, (4x^3/2) which is the left, you need to times it by the common denom, so 4x^3/2 times 2x^1/2
 
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