Which of the following pair(s) of curve is/are orthogonal?

MATHEMATICS · Single correct · CBSE · Mathematics · Continuity and Differentiability · Continuity and Differentiability

Problem

Which of the following pair(s) of curve is/are orthogonal? (a)

y^2 = 4ax

;

y = e^{-x/2a}

(b)

y^2 = 4ax

;

x^2 = 4ay

at

(0,0)

(c)

xy = a^2

;

x^2 - y^2 = b^2

(d)

y = ax

;

x^2 + y^2 = c^2

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