Divide 
by 5. Or multiply it by 1/5.
You get - 56/25 or
pounds per month.
You get - 56/25 or
A division of a company produces income tax apps for smartphones. Each income tax app sells for $9. The monthly fixed costs incu
rred by the division are $20,000, and the variable cost of producing each income tax app is $4.
(a) Find the break-even point for the division.
(x, y) =
Incorrect: Your answer is incorrect.
(b) What should be the level of sales in order for the division to realize a 10% profit over the cost of making the income tax apps? (Round your answer up to the nearest whole number.)
income tax apps
(a) Find the break-even point for the division.
(x, y) =
Incorrect: Your answer is incorrect.
(b) What should be the level of sales in order for the division to realize a 10% profit over the cost of making the income tax apps? (Round your answer up to the nearest whole number.)
income tax apps
1 answer:
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It looks like the differential equation is
Check for exactness:
As is, the DE is not exact, so let's try to find an integrating factor <em>µ(x, y)</em> such that
*is* exact. If this modified DE is exact, then
We have
Notice that if we let <em>µ(x, y)</em> = <em>µ(x)</em> be independent of <em>y</em>, then <em>∂µ/∂y</em> = 0 and we can solve for <em>µ</em> :
The modified DE,
is now exact:
So we look for a solution of the form <em>F(x, y)</em> = <em>C</em>. This solution is such that
Integrate both sides of the first condition with respect to <em>x</em> :
Differentiate both sides of this with respect to <em>y</em> :
Then the general solution to the DE is