If y=Sinx, then `(d^(2)y)/(dx^(2)) at x=pi/2` is equal to ............

"If "y=Sin x," then "(d^(2)y)/(dx^(2))" at "x=pi/2" is equal to "............

If y=sinx , then (d^2y)/(dx^2) will be

If y=Ae^(5x) , then (d^(2)y)/(dx^(2)) is equal to

if y = sin 2x , " then " (d^(6)y)/(dx^(6)) " at" x = pi/2 is equal to

If y=sinx+cosx" then "(d^(2)y)/(dx^(2)) is :-

If y=log(sinx)," then "(d^(2)y)/(dx^(2)) equals

If x=at^(2),y=2at then (d^(2)y)/(dx^(2)) is equal to

If y=((log)_(cosx)sinx)((log)_(sinx)cosx)+sin^(-1)(2x)/(1+x^2) , then (dy)/(dx) at x=pi/2 is equal to.......