Answer:
dy/dx = -5y - y/x
Step-by-step explanation:
In xy + 5x = 30
Differentiating xy implicitly
y + xdy/dx
Assuming u = xy
In xy = In u
Differentiating In u = 1/u = 1/xy
Differentiating 5x = 5 and differentiating a constant (30) = 0
1/xy(y + xdy/dx) + 5 = 0
(y + xdy/dx)/xy = -5
(y + xdy/dx) = -5xy
xdy/dx = -5xy - y
dy/dx = = (-5xy - y)/x
dy/dx = -5y - y/x
Answer:
i beileve in this answer its a question of more than one salution, one salution and no solutions ................ so more than one salutions
Step-by-step explanation:
Answer: (4) 14
Step-by-step explanation:
8x - 2y if x is 3 and y is 5
8x = 24
2y = 10
24 - 10 = 14
So 8x - 2y is 14.
Answer:
1. 62.95
2. 63.37
3. 63.7
Step-by-step explanation:
List the numbers by lining up the decimals and filling in zeros in the empty spaces to make all the numbers have the same number of digits, then compare whole numbers first then the decimals. There are two 63's so then you look at the decimal side one is .37 and one is .70 (add the zero so all numbers have the same number of digits)
63.37
62.95
63.70 (added the zero)