1.

If `x=e^tsint,y=e^tcost` then `(d^2y)/(dx^2)` at `x=pi` isA. `2e^(pi)`B. `(1)/(2)e^(pi)`C. `(1)/(2e^(pi))`D. `(2)/(e^(pi))`

Answer» Correct Answer - D


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