Find `y_2` in each of the following cases:
`y=acostheta,x=bsintheta`

Find y_2 in each of the following cases: x=acos^3theta , y=asin^3theta

Find y_2 in each of the following cases: x=t,y=t^2

Find y_2 in each of the following cases: x=a(costheta+thetasintheta),y=a(sintheta-thetacostheta) at theta=pi/4

Find y_2 in each of the following cases: x=at^2,y=2at

Find y_2 in each of the following cases: x=a(theta+sintheta) , y=a(1-costheta)

Find y_2 in each of the following cases: y=t^2+t^3 , x=t-t^4

Find y_2 in each of the following cases: x=e^t,y=sint at t=pi/2

Find y_2 in each of the following cases: x=a(t+1/t) , y=a(t-1/t)

Find (dy)/(dx) from the following : x = acos2theta, y = bsintheta

Find (d^(2)y)/(dx^(2)) in the following x=acostheta,y=bsintheta