If line y-2x-1-4 is tangent to y2-4ax then a is equal to

Y = mx+c is a tangent to y^2=4ax if c=a/m or a=cm ⇒ a=2 (1/4)=1/2 ...

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Slope Form of Tangent

If line y=2x+...

Question

If line $y = 2 x + \frac{1}{4}$ is tangent to $y^{2} = 4 a x$ then a is equal to

\frac{1}{2}

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y = 2 x + \frac{1}{4}

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