What is the derivative of (1/(x^2-7/(x^4))(x+3x^3)) ?

The derivative of (1/(x^2-7/(x^4))(x+3x^3)) is (20)/(x^2)+(21)/(x^4)+3

What is the first derivative of (1/(x^2-7/(x^4))(x+3x^3)) ?

The first derivative of (1/(x^2-7/(x^4))(x+3x^3)) is (20)/(x^2)+(21)/(x^4)+3

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\frac{d}{d x} ((\frac{1}{x ^{2}} - \frac{7}{x ^{4}}) (x + 3 x^{3}))

\frac{20}{x ^{2}} + \frac{21}{x ^{4}} + 3

Solution steps

\frac{d}{d x} ((\frac{1}{x ^{2}} - \frac{7}{x ^{4}}) (x + 3 x^{3}))

Apply the Product Rule:

(f \cdot g)^{'} = f^{'} \cdot g + f \cdot g^{'}

f = \frac{1}{x ^{2}} - \frac{7}{x ^{4}}, g = x + 3 x^{3}

= \frac{d}{d x} (\frac{1}{x ^{2}} - \frac{7}{x ^{4}}) (x + 3 x^{3}) + \frac{d}{d x} (x + 3 x^{3}) (\frac{1}{x ^{2}} - \frac{7}{x ^{4}})

\frac{d}{d x} (\frac{1}{x ^{2}} - \frac{7}{x ^{4}}) = - \frac{2}{x ^{3}} + \frac{28}{x ^{5}}

\frac{d}{d x} (x + 3 x^{3}) = 1 + 9 x^{2}

= (- \frac{2}{x ^{3}} + \frac{28}{x ^{5}}) (x + 3 x^{3}) + (1 + 9 x^{2}) (\frac{1}{x ^{2}} - \frac{7}{x ^{4}})

Simplify

(- \frac{2}{x ^{3}} + \frac{28}{x ^{5}}) (x + 3 x^{3}) + (1 + 9 x^{2}) (\frac{1}{x ^{2}} - \frac{7}{x ^{4}}) : \frac{20}{x ^{2}} + \frac{21}{x ^{4}} + 3

= \frac{20}{x ^{2}} + \frac{21}{x ^{4}} + 3

3 x - 3 x

\int \frac{2 1 + x ^{4}}{x ^{3}} d x

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

x^{^{''}} - x^{^{'}} = 0

y - 2 y^{^{''}} + y^{^{''''}} = 0

What is the derivative of (1/(x^2-7/(x^4))(x+3x^3)) ?
The derivative of (1/(x^2-7/(x^4))(x+3x^3)) is (20)/(x^2)+(21)/(x^4)+3
What is the first derivative of (1/(x^2-7/(x^4))(x+3x^3)) ?
The first derivative of (1/(x^2-7/(x^4))(x+3x^3)) is (20)/(x^2)+(21)/(x^4)+3