What is the derivative of-21x^2-3x_{+}8 ?

The derivative of-21x^2-3x_{+}8 is -42x

What is the first derivative of-21x^2-3x_{+}8 ?

The first derivative of-21x^2-3x_{+}8 is -42x

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\frac{d}{d x} (- 21 x^{2} - 3 x_{+} 8)

- 42 x

Solution steps

\frac{d}{d x} (- 21 x^{2} - 3 x_{+} \cdot 8)

Simplify

- 21 x^{2} - 3 x_{+} \cdot 8 : - 21 x^{2} - 24 x_{+}

= \frac{d}{d x} (- 21 x^{2} - 24 x_{+})

Treat

x_{+}

as a constant

Apply the Sum/Difference Rule:

(f \pm g)^{'} = f^{'} \pm g^{'}

= - \frac{d}{d x} (21 x^{2}) - \frac{d}{d x} (24 x_{+})

\frac{d}{d x} (21 x^{2}) = 42 x

\frac{d}{d x} (24 x_{+}) = 0

= - 42 x - 0

Simplify

= - 42 x

f (x) = 2 sec (x) + tan (x)

f (x) = 3 x - 6 cos (x), - 2 \leq x \leq 0

f (x) = \frac{3 x ^{2} - 8 x + 4}{x ^{2}}

f (x) = \frac{x ^{2} + 80}{x + 8}

f (x, y) = x^{2} + y^{2} - 2 x + 14 y - 11

What is the derivative of-21x^2-3x_{+}8 ?
The derivative of-21x^2-3x_{+}8 is -42x
What is the first derivative of-21x^2-3x_{+}8 ?
The first derivative of-21x^2-3x_{+}8 is -42x