Saturday

August 23, 2014

August 23, 2014

Posted by **Kyle** on Sunday, November 3, 2013 at 3:45pm.

9 − x/(x^2 + 1)^2.

The total cost to produce 2 boxes is $1,200. Find the total cost function

C(x).

I'm getting 9x-(1/(x^2 - 1))+1181.9 but i guess its wrong

- Brief calculus -
**Steve**, Sunday, November 3, 2013 at 8:32pmforgot that pesky factor of 2.

∫-x/(x^2+1)^2 dx

is not 1/(x^2+1)

Check the derivative:

d/dx (x^2+1)^-1 = -2x(x^2+1)^-2

So,

∫9 − x/(x^2 + 1)^2 = 9x + 1/(2(x^2+1)^2)

**Related Questions**

advanced math - The marginal cost of a product can be thought of as the cost of ...

Algebra - 83. Minimizing Marginal Cost The marginal cost of a product can be ...

math - The daily cost C, in RM, of producing a product is C(x)=1000+72x-0.06x^2...

Business Calculus - A manufacturer has found that marginal cost is dc/dx=3x^2-...

math - * I posted this before, but I left out the equation, sorry. A company ...

calc - Suppose the cost C(q) (in dollars) of producing a quantity q of a product...

math - Suppose the cost C(q) (in dollars) of producing a quantity q of a product...

calc - Suppose the cost C(q) (in dollars) of producing a quantity q of a product...

Economics - The market for fertilizer is perfectly competitive. Firms in the ...

Calculus - Given that C(x)=2x^3-21x^2+36x+1000 is a cost function, determine the...