Question

If tangent of the curve x = t² – 1, y = t² – t is perpendicular to x-axis, then –

• A. t = 0
• B. t = 11
• C. t = ¥
• D. t = –1/$\sqrt{3}$

Answer 1

Answer: (A)

t = 0

Answer 2

$\left( \frac{dy}{dx} \right)$ = ¥