'd^(2t)'/'d^(-2t)'

x=t cos t,y=t+sin t. Then (d^(2)tau)/(dy^(2)) at t=(pi)/(2) is (pi+4)/(2)(b)-(pi+4)/(2)-2(d) none of these

If the differential equation of a damped oscillator is (m d^(2)x)/(d t^(2)) + (bd x)/(d t) + k x = 0 then energy of damped oscillator vary with time .t. is E(t) =

If x=a(sin t-t cos t),y=a sin t then find the value of (d^(2)y)/(dx^(2))

if x=log_(e)t,t>0 and y+1=t^(2) then (d^(2)y)/(dx^(2))

If x=t+(1)/(t),y=t-(1)/(t)," where "tne0," then: "(d^(2)y)/(dx^(2))=

If x = (t^(3))/(3) - (5)/(2)t^(2) + 6t + 1 , then the value (d^(2)x)/(d t^(2)) , when (dx)/(d t) is zero is :

If x = (t^(3))/(3) - (5)/(2)t^(2) + 6t + 1 , then the value (d^(2)x)/(d t^(2)) , when (dx)/(d t) is zero is :

If x=t^(2)andy=t^(3) , then (d^(2)y)/(dx^(2)) is equal to: a) (3)/(2) b) (3)/(2)t c) (3)/(2t) d) (3)/(4t)