Friday

March 6, 2015

March 6, 2015

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**

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

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

chemistry - Complete the following reactions, where applicable. If no reaction ...

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

3rd grade - complete to show how you can find the sum by making a ten, hundred, ...

Math - I really need help with this question please Break-even equation. Fill in...

language arts - please help it says fill in the blanks to complete the ...

5TH GRADE MATH - I NEED HELP FINDING THE VARIABLE FOR THE FOLLOWING:57-BLANK-...

Spanish 2 Help! - Fill in the blamks with the appropriate pronoun and conjugated...

Maath:) - If an object is thrown vertically upward with an initial velocity of v...