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Lunna [17]
2 years ago
7

Find the derivative of 30x² + 7x at x = 2.

Mathematics
2 answers:
yanalaym [24]2 years ago
7 0

Answer:

<u>127</u>

Step-by-step explanation:

<u>Given</u> :

  • 30x² + 7x

<u>On differentiating,</u>

  • dy/dx = 2 * 30 * x²⁻¹ + 1 * 7 * x¹⁻¹
  • dy/dx = 60x + 7

<u>At x = 2</u>

  • 60(2) + 7
  • 120 + 7
  • <u>127</u>
alexgriva [62]2 years ago
6 0

First differentiate

  • d/dx(x^n)=nx^n-1

So

\\ \rm\Rrightarrow \dfrac{d}{dx}(30x^2+7x)

\\ \rm\Rrightarrow 60x+7

Put x=2

  • 60(2)+7
  • 120+7
  • 127
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