d(- 0.00000003*X6 0.00001*X5 - 0.0018*X4 0.1576*X3 - 7.5998*X2 201.2044*x - 2048.025)/dx = 0

Hi:

The expression, as written, appears to be the derivative of a 6th degree polynomial function. An example of Such a function is:

f(x) =1.2x^6+7x^5-x^4+dx^3-0.414x^2+4x+5

For simplicity, I have underscored each of the 7 terms given. The important thing to notice here is thatevery pair of consecutive terms is combined by way of(e.g.,+or-7x^5-x^4,4x+5, etc.).

But your expression has no operation between - 0.00000003*X6 and 0.00001*X5, nor between 0.0018*X4 and 0.1576*X3.

I suggest that you should recheck the problem as was presented to you, looking for the missing operation signs as discussed above.

Regards,

Rich B.