Question:medium

If the equation of the tangent to the parabola $y^2=4ax$ at the point $(at^2,2at)$ is perpendicular to the line $x+y=1$, then the value of $t$ is:

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For the parabola $y^2=4ax$, remember the standard tangent form directly: \[ ty=x+at^2 \] It saves a lot of differentiation.
Updated On: May 16, 2026
  • $1$
  • $-1$
  • $\pm 1$
  • $0$
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The Correct Option is C

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