Friday

September 19, 2014

September 19, 2014

Posted by **sara** on Friday, May 9, 2008 at 12:07am.

i keep getting the wrong answer for this problem evn when plugging 2 in for y.

- calc -
**JP**, Friday, May 9, 2008 at 12:31amd/dx(4x^2+3x+xy)=d/dx(2)

8x+3+y+xy'=0

At x=2, y=-10, we get

16+3-10+2y'=0

Solving for y' yields y'(2)=-9/2.

You are not suppose to plug in 2 for y. y(2)=-10 means that the function has a value of -10 when x=2.

- calc -
**Anonymous**, Wednesday, March 16, 2011 at 4:05pmOMG this helped soooo much!!! thank you!!!

**Answer this Question**

**Related Questions**

calc - If 4x2+3x+xy=2 and y(2)=–10 , find y'(2) by implicit differentiation. i ...

Calculus 1 Implicit differentiation - Help please help me understand what i am ...

calculus; implicit differentiation - Use implicit differentiation to find the ...

Calculus: implicit differentiation - Find dy/dx by implicit differentiation 1. x...

Calculus 1 - implicit differentiation - I do not understand implicit ...

Calculus 1 - implicit differentiation - I do not understand implicit ...

Calc - Use implicit differentiation to find the slope of the tangent line to the...

Calculus - Use implicit differentiation to find dy/dx. e^4x = sin(x+2y). This is...

Calculus - How do you use imlicit differentiation to differentiate e^(xy)? I ...

Implicit Differentiation - Find the slope of the tangent line to the curve (a ...