Mathematics - Application of Derivative Question with Solution | TestHub

MathematicsApplication of DerivativeTangents & NormalsMedium2 minQB

MathematicsMediumsingle choice

The abscissa of the points, where the tangent to the curve $y = x^{3} - 3 x^{2} - 9 x + 5$ is parallel to x-axis is

Answer:

Solution:

Tangent is parallel to x-axis $\Rightarrow \frac{d y}{d x} = 0 \Rightarrow 3 x^{2} - 6 x - 9 = 0 \Rightarrow x = - 1, 3$

Stream:JEESubject:MathematicsTopic:Application of DerivativeSubtopic:Tangents & Normals

⏱ 2mℹ️ Source: QB

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