What is the derivative of (x^2-1/(x^3+x+1)) ?

The derivative of (x^2-1/(x^3+x+1)) is (-x^4+4x^2+2x+1)/((x^3+x+1)^2)

What is the first derivative of (x^2-1/(x^3+x+1)) ?

The first derivative of (x^2-1/(x^3+x+1)) is (-x^4+4x^2+2x+1)/((x^3+x+1)^2)

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\frac{d}{d x} (\frac{x ^{2} - 1}{x ^{3} + x + 1})

\frac{- x ^{4} + 4 x ^{2} + 2 x + 1}{( x ^{3} + x + 1 ) ^{2}}

Solution steps

\frac{d}{d x} (\frac{x ^{2} - 1}{x ^{3} + x + 1})

Apply the Quotient Rule:

(\frac{f}{g})^{'} = \frac{f ^{'} \cdot g - g ^{'} \cdot f}{g ^{2}}

= \frac{\frac{d}{d x} ( x ^{2} - 1 ) ( x ^{3} + x + 1 ) - \frac{d}{d x} ( x ^{3} + x + 1 ) ( x ^{2} - 1 )}{( x ^{3} + x + 1 ) ^{2}}

\frac{d}{d x} (x^{2} - 1) = 2 x

\frac{d}{d x} (x^{3} + x + 1) = 3 x^{2} + 1

= \frac{2 x ( x ^{3} + x + 1 ) - ( 3 x ^{2} + 1 ) ( x ^{2} - 1 )}{( x ^{3} + x + 1 ) ^{2}}

Expand

2 x (x^{3} + x + 1) - (3 x^{2} + 1) (x^{2} - 1) : - x^{4} + 4 x^{2} + 2 x + 1

= \frac{- x ^{4} + 4 x ^{2} + 2 x + 1}{( x ^{3} + x + 1 ) ^{2}}

\frac{\partial}{\partial t} (4 sin (t))

y = \frac{1}{2} x, y = \frac{1}{25} x^{2}, y = 1

x \to 5 lim (\frac{2 x}{x - 5})

x \to 9 lim (f (x))

\frac{d}{d x} (10 x + 7 x)

What is the derivative of (x^2-1/(x^3+x+1)) ?
The derivative of (x^2-1/(x^3+x+1)) is (-x^4+4x^2+2x+1)/((x^3+x+1)^2)
What is the first derivative of (x^2-1/(x^3+x+1)) ?
The first derivative of (x^2-1/(x^3+x+1)) is (-x^4+4x^2+2x+1)/((x^3+x+1)^2)