Posted by **Liz** on Tuesday, December 28, 2010 at 6:41pm.

Find dy/dx

y = (x+y)/(x√2)

I know that you can simplify the problem by arranging it to:

y = (x)/(x√2) + (y)/(x√2)

but I don't know where to go from here

- Calculus -
**bobpursley**, Tuesday, December 28, 2010 at 7:23pm
I am not certain what you mean by x√2.

Please explain

- Calculus -
**TutorCat**, Tuesday, December 28, 2010 at 7:31pm
apply quotient rule:

http://www.mathwords.com/d/derivative_rules.htm

y'=[(1+y')(x√2)-(x+y)(√2)]/(x√2)^2

implicit differentiation:

http://www.cliffsnotes.com/study_guide/Implicit-Differentiation.topicArticleId-39909,articleId-39882.html

solve for y'

- Calculus -
**drwls**, Tuesday, December 28, 2010 at 8:04pm
I agree with Bob. A clarification is necessary.

(x)/(x√2) looks like 1/√2 to me, and the derivative of that term is zero.

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