Explain, with reason, whether and can both be positive at the instant when and for a…

MATHEMATICS · Subjective · CBSE · Mathematics · Continuity and Differentiability · Continuity and Differentiability

Problem

Explain, with reason, whether

\dfrac{dx}{dt}

and

\dfrac{dy}{dt}

can both be positive at the instant when

x=3

and

y=4

for a particle whose coordinates always satisfy

x^{2}+y^{2}=25