contestada

Find the slope m of the tangent to the curve y = 9 + 4x2 − 2x3 at the point where x = a.

Respuesta :

[tex]\bf y=9+4x^2-2x^3\implies \left. \cfrac{dy}{dx}=8x-6x^2 \right|_{x=a}\implies 8a-6a^2[/tex]

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