Question

Help!

Answer 1

What will be the perimeter and the area of the rectangle below if it is enlarged using a scale factor of 4.5?

A rectangle is shown. The length of the rectangle is labeled as 8 cm, and the width is labeled as 6 cm.
Perimeter = 46 cm, area = 131.25 cm2 Perimeter = 126 cm, area = 972 cm2 Perimeter = 46 cm, area = 972 cm2 Perimeter = 126 cm, area = 131.25 cm2 got anything?

Answer 2

use implicit differentiation

Answer 3

Is that when you set it equal to y and then derive it?

Answer 4

find the derivative with respect to x term by term

Answer 5

So I would get 2x=lnxy first correct?

Answer 6

you treat y as a function of x

Answer 7

Im confused.

Answer 8

the 2x is correct but you use the Chain and product Rules to differentiate the right side

Answer 9

2x = (1/ (xy) * (x dy/dx + y)

now you make dy/dx the subject

Answer 10

What do you mean by make it the subject? Like solve for that?