Thursday

October 2, 2014

October 2, 2014

Posted by **Diana** on Monday, June 21, 2010 at 10:39pm.

xy + 7x + 5y = 8

(a) Differentiate both sides with respect to x to complete the following.

( blank )y ' + y + blank =0

(b)Solve for y ' in terms of x and y.

(c) Calculate dy/dx at the point (4,-4).

Can anyone help me on this questions I'm struggling so badly....

- math -
**Reiny**, Monday, June 21, 2010 at 11:14pmfor xy + 7x + 5y = 8

use the product rule for the xy term

x(dy/dx) + y + 7 5dy/dx = 0

dy/dx(x+5) = -y-7

dy/dx = -(y+7)/(x+5)

sub in the point (4,-4)

- math -
**Jack**, Tuesday, June 22, 2010 at 3:49pmwhich one is part a and part b.

**Answer this Question**

**Related Questions**

Calculus - Can someone explain the method of implicit differentiation to me. I ...

Calculus - Can someone explain the method of implicit differentiation to me. I ...

help - Introduction to quadratic equations? If you solve the equation by ...

Algebra 2 - Introduction to quadratic equations? If you solve the equation by ...

math - If cos(3 x)614 x e^2 y=0, find [ dy/dx] using implicit differentiation...

Calculus - How do you us implicit differentiation to solve x( y + 2 )^5 = 8 x( y...

Math - Emmy is 12. She writes an equation to find her mother's age, m. m - 12 + ...

Math - 4(j)-7=9 Add 7 to both sides of the equation and you get 4 j = 16 Now ...

Visual Basic (Computer) - In the following examples, identify the condition a ...

math,correction - Is this correct: Problem #13 Solve: 9x^2 = 14 I did the ...