What is the first d/(dt)((X)(2X(N-X))) ?

The first d/(dt)((X)(2X(N-X))) is 0

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d/(dt)((X)(2X(N-X)))

\frac{d}{d t} ((X) (2 X (N - X)))

0

Solution steps

\frac{d}{d t} ((X) (2 X (N - X)))

Simplify

(X) (2 X (N - X)) : 2 X^{2} (N - X)

= \frac{d}{d t} (2 X^{2} (N - X))

Treat

N, X

as a constant

Derivative of a constant:

\frac{d}{d x} (a) = 0

= 0

\frac{20}{( s ^{2} + 16 ) ( s + 7 )}

(x - y) \cdot (x + y)

- (x - 2) x

x \cdot 120 (1 - \frac{x}{80}) - 2100

\Rightarrow u (6, - 3, 6)