If x= t+ ≤ft(\; t/2) , y= \; t, then find ...

CBSE Class 12 Math 2019 Delhi Set 2 Solved Paper

Question : 7 of 9

Marks: +1, -0

x=\cos t+\log \tan \left(\; \frac{t}{2}\right) ,\quad y=\sin \; t

, then find the values of

\; \frac{d^2 y}{dt^2}

and

\; \frac{d^2 y}{d x^2}

t=\; \frac{\pi}{4}

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