What is the derivative of (x+9)(7sqrt(x)+2) ?

The derivative of (x+9)(7sqrt(x)+2) is (21x+63)/(2sqrt(x))+2

What is the first derivative of (x+9)(7sqrt(x)+2) ?

The first derivative of (x+9)(7sqrt(x)+2) is (21x+63)/(2sqrt(x))+2

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derivative of

(x + 9) (7 x + 2)

\frac{21 x + 63}{2 x} + 2

Solution steps

\frac{d}{d x} ((x + 9) (7 x + 2))

Apply the Product Rule:

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

f = x + 9, g = 7 x + 2

= \frac{d}{d x} (x + 9) (7 x + 2) + \frac{d}{d x} (7 x + 2) (x + 9)

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

\frac{d}{d x} (7 x + 2) = \frac{7}{2 x}

= 1 \cdot (7 x + 2) + \frac{7}{2 x} (x + 9)

Simplify

1 \cdot (7 x + 2) + \frac{7}{2 x} (x + 9) : \frac{21 x + 63}{2 x} + 2

= \frac{21 x + 63}{2 x} + 2

What is the derivative of (x+9)(7sqrt(x)+2) ?
The derivative of (x+9)(7sqrt(x)+2) is (21x+63)/(2sqrt(x))+2
What is the first derivative of (x+9)(7sqrt(x)+2) ?
The first derivative of (x+9)(7sqrt(x)+2) is (21x+63)/(2sqrt(x))+2