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For the curve y=4x^3-2x^5 find all point...

For the curve `y=4x^3-2x^5` find all points at which the tangent passes through the origin.

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The correct Answer is:
The points are `(0,0),(1,2)`, and `(-1,-2)`.

Given the equation of curve is `y=4 x^{3}-2 x^{5}`. $$ \therefore \frac{d y}{d x}=12 x^{2}-10 x^{4} $$ Now, slope of the tangent at a point `(x, y)` is `12 x^{2} - 10 x^{4}`.

The equation of the tangent at `(x, y)` is given by, $$ ...
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