Derivative of (((x-2)/(x+12))/2)^3/2

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SUMMARY

The discussion revolves around the derivative of the function (((x-2)/(x+12))/2)^3/2. The participant initially arrived at an incorrect answer due to a miscalculation involving the application of the quotient rule and the distribution of a negative sign. The correct approach requires careful evaluation of the function, particularly ensuring accurate distribution and simplification, which leads to the correct numerator of 14 instead of 10. This adjustment ultimately yields the correct derivative value of 21.

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Homework Statement




chainrule.jpg




However, according to the online homework program, I was supposed to get this answer:



chainrule1.png







Question 1: Is my answer incorrect?


Question 2: Assuming my answer is also correct, how could I approach/evaluate this function in order to get the preferred answer of the homework assignment?
 
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There's an extra /2 in the thread title. Is that supposed to be there? That "10" is wrong, so you need to check that part of the calculation. You may also want to practice writing the number 2 so that it doesn't look like ∂. :wink:
 
Yep, that extra two in the title means I've been up for two hours too long lol. And because I didn't distribute the negative sign correctly when applying the quotient rule, I got a 10 in the numerator when I should have gotten a 14, which would have then yielded the right numerator (14(3))/2 = 21. Appreciate your help on this problem.
 

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