First slide

Diffrentiation

Question

$y = 4 + 5 x + 7 x^{3} . Find \frac{d y}{d x}$

Easy

A

5 - 21x²
B

5 + 21x²
C

9 + 7x²
D

5 + 21x

Solution

$\begin{array}{l} y = 4 + 5 x + 7 x^{3} \\ \frac{d y}{d x} = 5 + 21 x^{2} \end{array}$

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